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Best Toe & Foot Warmers for Extreme Cold Reviewed

last updated Feb 05, 2019

Some choose to spend this season in the mountains or on ice – skiing, snowboarding, hiking or skating. Others prefer to spend it in the yard – bobsledding, building snowmen or having snowball fights with the kids, ignoring the slowly-climbing electricity fee they’ll have to deal with at the end of the month. But regardless of if it’s just shoveling the driveway or if you spend days in a cabin on the mountains, there’s one thing everybody needs, and that is a high-quality foot and toe warmer that will keep you protected from the nipping cold.

In a Hurry? The test winner after 13 hrs of research

icon
Lenz Heat 1200 1.0
93/100 our score
Style
95
Safety Hazards
94
Use
96
Brand
90
Value
90
Lenz Heat 1200 1.0
Why is it better?

USB Charger Included

Machine Washable

Bluetooth Enabled

14 Hours of Heat

Great for Sports

In a Hurry? Editors choice:
Lenz Heat 1200 1.0
Test Winner: Lenz Heat 1200 1.0
Researched Sources
17
Researched Sources
Reviews Considered
1204
Reviews Considered
Hours Researching
13
Hours Researching
Products Evaluated
20
Products Evaluated
Sorting Options
Style Safety Hazards Use Brand Value By Default
Rank
PictureProduct
Name
Rating
Shops
#1
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
93
Style
95%
Safety Hazards
94%
Use
96%
Brand
90%
Value
90%
Price Comparison Last Updated (25.03.19)
$299.95
#2
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
91.4
Style
90%
Safety Hazards
97%
Use
89%
Brand
89%
Value
92%
Price Comparison Last Updated (25.03.19)
$19.99
#3
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
90.6
Style
93%
Safety Hazards
90%
Use
89%
Brand
90%
Value
91%
Price Comparison Last Updated (25.03.19)
#4
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
90.2
Style
89%
Safety Hazards
91%
Use
90%
Brand
92%
Value
89%
Price Comparison Last Updated (25.03.19)
$15.99
#5
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
88.8
Style
92%
Safety Hazards
90%
Use
88%
Brand
87%
Value
87%
Price Comparison Last Updated (25.03.19)
$180.00
#6
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
88.4
Style
90%
Safety Hazards
87%
Use
92%
Brand
87%
Value
86%
Price Comparison Last Updated (25.03.19)
$34.99
#7
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
88
Style
88%
Safety Hazards
89%
Use
86%
Brand
90%
Value
87%
Price Comparison Last Updated (25.03.19)
$9.97
#8
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
87.6
Style
89%
Safety Hazards
90%
Use
86%
Brand
87%
Value
86%
Price Comparison Last Updated (25.03.19)
$61.95
#9
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
87.4
Style
85%
Safety Hazards
89%
Use
84%
Brand
90%
Value
89%
Price Comparison Last Updated (25.03.19)
$32.57
#10
The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
86
Style
86%
Safety Hazards
88%
Use
85%
Brand
84%
Value
87%
Price Comparison Last Updated (25.03.19)
$47.00
In Depth Review Top 10
  • Lenz Heat 1200 1.0
  • RockDove Memory Foam Slipper
  • Proaller Pad
  • HotHands Insole
  • Hotronic FootWarmer S4
  • PureRelief XL
  • Grabber Toe Warmers
  • Gideon Spa
  • HotHands Toe Warmers
  • Indus-Tool FWXXX
Table of contents
  • Criteria Used for Evaluation
  • Frequently Asked Questions
  • Sources

10 Best Foot Warmers

1. Lenz Heat 1200 1.0

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
93
Lenz Heat 1200 1.0
Style
95
Safety Hazards
94
Use
96
Brand
90
Value
90
best offer for today
$299.95
Pros:

USB Charger Included

Machine Washable

Bluetooth Enabled

14 Hours of Heat

Great for Sports

Cons:

Expensive

iPhone App Is Not Free

If you are an avid skier, then you know that the most frustrating thing that can happen is to have to get off the slopes because your feet and toes are freezing. These socks were made specifically to eliminate this problem, seeing that they are designed as a regular pair of socks that has a heating element in the foot area. All you have to do is attach the battery through a stud clip on the leg part of the sock and you’re ready to go.

Read more

Bluetooth Enabled
Perhaps the best part about these socks is the fact that you can control the heat they produce through your smartphone. No need to manually adjust the temperature, since all the options you need are available in just a few taps of your fingers.

Up to 14 Hours of Heating
This is the product that will last you longest on this list. Keeping you warm for periods up to 14 hours, you can use these socks even on the longest days. Whether you’re out in nature or at home doesn’t matter, what counts is that your toes are toasty and warm.

Cost and Value
Ranking highest on this list when it comes to price, these heated socks are quite an investment. Nonetheless, so is all your skiing equipment and the fact that these allow you to be outside for longer means quite a lot. Plus, they’re fast to charge, easy to control, is machine washable and provide good moisture control. What more could you want?

2. RockDove Memory Foam Slipper

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
91.4
RockDove Memory Foam Slipper
Style
90
Safety Hazards
97
Use
89
Brand
89
Value
92
best offer for today
$19.99
Pros:

Memory Foam Insole

Cotton & Spandex

Stylish

Sturdy Rubber Sole

Anti-Slip Waterproof Bottom

Easy Slip-On- and-Off

Cons:

No External Heat Source

If none of the other foot and toe warming products suit your preferences, these adorable comfortable slippers might do the trick. They can be worn outside, but you might not want to leave your house as they're perfect for working (or surfing the net) at your computer on a frigid winter's day.

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Memory Foam Insole
These adorable slippers have a memory foam cushioned insole that molds to your feet and gives you the feeling of walking on a pillow. The way the material surrounds your feet will warm them up in no time.

Convenient
If you have to get up to grab a coffee or a snack, you can simply get up. Other options on our list might mean you have to leave the comfort of your warming station but not with these.

Cost and Value
These are around the same price as your average slipper. If you spend a lot of your wintertime in front of a laptop or computer, these are definitely worth the consideration!

3. Proaller Pad

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
90.6
Proaller Pad
Style
93
Safety Hazards
90
Use
89
Brand
90
Value
91
best offer for today
Pros:

Auto Shut Off

Machine Washable

Soft Flannel Material

Extra Large Size

3 Heating Levels

Cons:

Can’t Be Used Outside

Can Get Very Hot

If you love heated blankets and pads, then you’re going to fall absolutely in love with the Proaller electric heating pad which was made specifically for your feet, but can be used on any other part of your body as well. Thanks to its design, this is a product which can be used both in the home, as well as in the office, it offers three levels of warmth and it’s extra large size allows you to share it with a loved one.

Read more

Auto Shut Off
This is an electric heater which you can use anywhere, including in bed. It boasts a long cord which won’t limit you in terms of where you use it, and it’s got a pretty important safety feature - this pad will automatically turn off after two hours so that you aren’t exposed to excessive heat.

Machine Washable
When you purchase any product that you will be using on your feet, you need to ensure that you can keep it clean and odor free. The Proaller is made out of a soft plush material that will feel great against your skin, and it is machine washable so that you can enjoy a clean, soft and pleasantly scented pad anytime.

Cost and Value
Considering that it is a product that is durable, has multiple purposes, takes safety into consideration and is easy to keep clean, you will be surprised to know that the Proaller comes at a price which ranks quite low on this list. This means that you can buy more than one, or get it as a gift for your loved ones.

4. HotHands Insole

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
90.2
HotHands Insole
Style
89
Safety Hazards
91
Use
90
Brand
92
Value
89
best offer for today
$15.99
Pros:

Up to 9 Hours of Warmth

Convenient

Air-Activated

Adhesive

TSA Approved

Cons:

Unsuitable for Large Feet

Sometimes They Don’t Heat Up

These may sound suspiciously similar to another pick. But although they are from the same brand, these warming insoles are specially made to cover the bottom of your entire foot. They are perfect for people who spend a lot of time outdoors, doing sports or just shoveling the driveway. They can stay warm for up to nine hours and are adhesive. With these, you'll never have to dread stepping outdoors into ice and snow again.

Read more

Convenience
These full-length foot warming insoles are designed for use in shoes and boots. This renders them ideal for long hikes and makes sure you won't have to deal with any lumpy discomfort.

TSA Approved
One of the best things about these insoles is the fact that you can wear them even when traveling by airplane. Being TSA approved, you’ll be able to carry them with you wherever you go.

Cost and Value
These come in packs of 16 that seems to cost quite a bit at first glance. But when you think about it, each warmer can last for up to nine hours, so one pack will last you quite a while! Plus, they won’t harm the environment when you throw them out, which is a big pro in our book.

5. Hotronic FootWarmer S4

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
88.8
Hotronic FootWarmer S4
Style
92
Safety Hazards
90
Use
88
Brand
87
Value
87
best offer for today
$180.00
Pros:

Custom Kit

Includes Battery and Charger

Conserves Electricity

Durable

Increases Temperature by 30%

Cons:

Expensive

Battery is Mounted on Outside of Footwear

This is an item which uses a power source in order to keep your feet and toes warm in cold conditions. These shoe inserts may not be as convenient as their air-activated, grab-and-go counterparts, but they offer amazing features as well. They can be installed comfortably in all types of footwear ranging from typical winter boots to ski boots. They can be taken out at any time, and are great at conserving electricity. If you're not good with your hands, you may not be a big fan of this one as it is a custom kit. However, the kit comes with everything, including battery packs, chargers, self-adhesive strips and Hotronic's Heat Ready Insoles.

Read more

Warmer for Longer
For a single full charge, these foot warmers can stay warm for long periods of time while also offering up to a 30% increase in average temperature.

Conserves Electricity
As they claim to maintain up to 55% of a full charge, you won't have to keep slipping them in and out of your shoe to charge or waste your time waiting for them to be ready before you leave the house.

Cost and Value
Because one kit comes with so much, they are quite expensive. You'll want to think it through before buying this product, but once you do you won't regret it.

6. PureRelief XL

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
88.4
PureRelief XL
Style
90
Safety Hazards
87
Use
92
Brand
87
Value
86
best offer for today
$34.99
Pros:

6 Temperature Settings

9 ft Cord

Comes With Storage Bag

Good for Therapeutic Use

Extra Large Size

Cons:

Short Lifespan

Can Overheat

Designed in California to be used for therapeutic purposes, the PureRelief XL is a heated blanket which is to be used on targeted areas of your body, including your back, neck, arms, and legs. But what you will find to be even better about it is the fact that it will let you cozy up in front of the TV or your computer, enjoying the warmth it provides to your cold feet.

Read more

6 Temperature Settings
Getting the perfect temperature is never easy, where the digital LCD controller on this product comes in really handy. It has six different heating levels, which gives you plenty of options to choose from, ensuring that you feel absolutely comfortable no matter what.

Comes With Storage Bag
One of the downsides of bulky warming products intended for your feet is that you are unlikely to be using them all year long. The PureRelief XL comes with a storage bag so that you can properly put it away, ensuring that it remains clean and functional no matter how long it has been sitting in the back of your closet.

Cost and Value
Ranking slightly above average on this list when it comes to price, the PureRelief XL is a great choice that can be used in a huge number of ways. Thanks to the well-designed temperature selection program, it is one of the best products of this kind available for purchase online.

7. Grabber Toe Warmers

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
88
Grabber Toe Warmers
Style
88
Safety Hazards
89
Use
86
Brand
90
Value
87
best offer for today
$9.97
Pros:

Air-Activated

Adhesive Backing

All Natural Ingredients

Up to Six Hours

Affordable

Cons:

Inconsistent Heat

These toe warming products are by one of the most popular brands. They are air-activated, which renders them convenient and great for going out skiing or snowboarding. They are also odorless and non-toxic and are made with all natural ingredients. Each warmer can last for up to six hours and can reach a temperature up to 42 degrees Celsius, or 107 degrees Fahrenheit. They can be comfortably worn in shoes and boots and will keep your toes warm no matter the weather.

Read more

Natural Ingredients
Grabber uses only natural ingredients in their toe warming inserts. It is a safe and non-toxic heat source, which you can confidently wear without having to be afraid of harmful chemicals being in contact with your skin.

Adhesive
Adhesive backing allows these to be stuck to the outside of socks and worn inside shoes and boots, rendering them easy and convenient for all types of occasions.

Cost and Value
One pack comes with 40 packs of two, each of which can last for up to six hours. They have a great price and are definitely worth checking out.

8. Gideon Spa

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
87.6
Gideon Spa
Style
89
Safety Hazards
90
Use
86
Brand
87
Value
86
best offer for today
$61.95
Pros:

Remote Control Operated

Washable Fleece Upper

Deep Massaging 3D Nodes

Great for Foot Issues

Can Massage Back

Cons:

Not Too Hot

Unsuitable for Large Feet

If you’re looking at gadgets to warm your feet and toes because you’re looking for comfort more than practicality, then the Gideon Foot Spa might just be the best choice for you. This massager is made to give your feet relief after a hard day of work, while the built-in heating mechanism comes in quite handy during the cold winter months.

Read more

Therapeutic Effect
Mimicking the motions a professional masseuse would make during a spa session, the Gideon Spa uses deep relief nodes to help relieve the symptoms of various foot problems, including heel spurs, plantar fasciitis, arthritis, foot swelling as well as poor circulation. Additionally, it can also be used on your back.

Removable Fleece Upper
The fleece upper on the Gideon Spa is removable, which means that you can even use this product if your feet are warm enough. Additionally, it’s completely washable, ensuring proper hygiene.

Cost and Value
Ranking average on this list when it comes to cost, the Gideon Spa is a great choice for anyone who wants a product that will do more than just keep their feet warm. The affordable price means that you will pay less for this product than a professional massage, but you’ll be able to enjoy it for years to come.

9. HotHands Toe Warmers

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
87.4
HotHands Toe Warmers
Style
85
Safety Hazards
89
Use
84
Brand
90
Value
89
best offer for today
$32.57
Pros:

Thin

Adhesive

Air-Activated

Comfortable

Large Packs

Cons:

Unsuitable for Diabetics

Not Warm Enough for All Users

HotHands is well known for their hand and foot warming products. This particular pack of products contains single use and air-activated heating aids, rendering them extremely convenient for all types of circumstances. Their thinness makes them ideal for being outdoors for long periods of time, as they can sit comfortably in your shoes. Their adhesive backing also ensures they don't slip and slide around. Providing up to nine hours of warmth, these are sure to keep your feet cozy for an entire day outdoors.

Read more

Air-Activated
You won't have to plug in the microwave or boil any water to warm these up. Because they are air-activated, they're super convenient for skiing, going on hikes, or even just commuting to work.

Thin
These aren't bulky, so you can easily slip them into your shoes to keep your toes comfy and toasty warm. You’ll find them especially convenient if you have wide feet that are already pressed for space inside your bulky winter boots.

Cost and Value
These inserts by HotHands come in big packs that are sure to last you throughout the coldest months. They are reasonably priced and a great bargain. A particular point of value is that they last up to nine hours.

10. Indus-Tool FWXXX

The rating is based on the average rating (1-100) from all the criteria in which we rated this product.
86
Indus-Tool FWXXX
Style
86
Safety Hazards
88
Use
85
Brand
84
Value
87
best offer for today
$47.00
Pros:

Safe for Use

Eases All-Day Standing

Energy Saving

Specifically Designed for Feet

Sturdy Rubber Build

Cons:

Small Surface

Limited Use

This is a warming device best used by those who have to spend long hours standing on hard, cold surfaces. It’s the perfect choice if you’re working in your garage, workshop or at a stall, seeing that it will both protect your feet from the fatigue that comes with standing on concrete, as well as a nice warming effect to keep your toes comfortable all day long.

Read more

More Practical Than Space Heaters
The Indus-Tool FWXXX uses considerably less electricity than a space heater, and it provides you with a warmth which is completely directed towards keeping your body at a comfortable temperature. This way, you won’t have to unnecessarily heat large spaces, saving money on your next electricity bill.

Reduces Risk of Fire
Developed according to high safety standards, this pad will reduce the likelihood of a fire which is quite a common occurrence with similar products. It’s TUV listed and will prevent tripped circuit breaks.

Cost and Value
Ranking relatively low on this list when it comes to price, this is a warmer you will definitely want to get your feet and toes on. It’s perfect for professional use, but will also be a great gadget to have handy in your home.

Criteria Used for Evaluation

Style

If you’ve looked over our list of the best ways to keep your feet and toes from getting too cold during winter time, then you’ve noticed that there is a very wide variety of products that we’ve chosen as possible options. While all of them will do the job, it is important to consider whether either of these items will be the best choice for you. Do you want to use these toe warming products indoors or outdoors? How long do you need it to last? Do you prefer a single use or a multiple use item? For those with sensitivity issues, the way in which these inserts fit inside their shoes can also be an important factor to consider.

Generally, we’ve broken our list of warming aids into a few categories:

Heat Packs – chemical heat packs are a great source of heat for when you’re on the go. And the best thing about them is that there are different kinds dedicated to keeping your entire body warm, not just your feet and toes. These products will come in pairs, one for each of your feet. While there’s a distinction between those intended for warming your toes and those for your feet, the way they work is pretty similar. Containing a compound of ingredients including iron, water, salt and activated carbon, these packs will need to be shaken which will mix all of these ingredients, producing heat. From there, you can stick them to the bottom of your socks, put on your shoes, and you’re ready to go. The best use for heat packs is when you’re outdoors doing activities such as skiing, camping, tailgating, hiking or hunting. During these activities, you are likely to stay outdoors for long periods of time, which means that an added source of heat that will protect your extremities can make quite a difference, and heat packs can keep you warm for upwards of 5 hours. Nonetheless, if you suffer from cold feet, you could probably use these indoors as well.The downside of this type of product, however, is the fact that these packs are single use. That means if you’re after some consistent heating during the cold months, you will go through these particularly fast. Furthermore, there is a possibility that the ingredients in the pack fail to activate, which will leave you just as cold as you were initially.

Heating Pads – if your main goal is to keep comfortable indoors, whether in bed, on the couch or while sitting at your computer, then the best way to go is definitely to get a heated footrest. These come in different variations, from those that are like blankets and are intended to be used in bed, to those which even have slight massaging properties and that will need to be plugged into a USB source. Heating pads use electricity to generate heat, either from rechargeable batteries or from being directly plugged into a power source (such as an outlet or your computer). They will allow you to keep comfortable while you’re inside your home – especially if you prefer to not wear shoes inside. One of the biggest advantages that these products offer is the fact that, despite requiring electricity to work, they can still save you a lot of money. Some people will find that turning the heating in their entire house is the best way to keep comfy, but if you’re worried about the bill that’s going to arrive in your mailbox after a month of doing that, you might want to invest in a heater that uses power, but does not waste it on areas of your home where the added heat is not necessary.

Battery Powered Insoles, Socks, and Shoes – last but not least, it’s possible that the items on this list that caught your eye were the ones which work in multiple environments. Shoes, socks, and insoles which allow you to use them as a source of heat in more than just one environment are a great option if you can afford the initial price tag. You will be able to use most of these both outside and inside, as all you’ll have to do is charge them, and you’ll be ready to go. Whether you go with the electrically heated socks, insoles or house slippers, you’ll definitely appreciate the constant warmth they provide.

Safety Hazards

As mentioned above, the heat source you choose to provide warmth to your extremities can be a single-use item, or it can be a product which was made to serve you for several years. If you’re someone who is interested in protecting nature, then you may be worried about whether the product you’ve chosen is completely safe for your environment.

When it comes to single-use heat packs, they contain fully natural materials which generate heat when mixed. Nonetheless, they still may use synthetics and non-biodegradable materials in their packaging and outer shell, which means that if you’re going to be burning through more than a few of these per week, then they do make a significant impact. Some people suggest re-using these heat packs by putting them in a sealed bag that contains no air, which means that you can use the same pack on more than just one occasion, minimizing the amount of trash that is going to end up polluting your environment.

If your preferred heating device uses batteries or an electric source, make sure you always dispose of batteries in a safe way, and that you unplug your device when you aren’t using it. Not only will this help protect nature, but it can also save you a considerable amount of money by lowering the amount of power you use.

Use

Last but not least, an important aspect of choosing a heat source that you’ll be using in contact with any of your body parts is the safety it provides. Whether you opt for an air-activated or battery operated source of warmth, there are a few general rules which you need to follow in order to prevent any unwanted side effects.

First and foremost, unless stated otherwise on the manufacturer’s instructions, no heat source should be in direct contact with your skin (or your valuables such as your phone). As these are products which generate heat, they may cause burns if put directly on your feet. If at any point you feel like you are experiencing more heat than is comfortable, it’s crucial that you immediately remove the pack from your shoes or to take your feet off the heated surface.

Another thing to consider is that very hot feet do not go well with certain medical problems. First and foremost, if you suffer from venous disease, it would be best to consult with your doctor whether using a heating device is safe for you. Otherwise, it’s also possible that you have sweaty feet or bacterial and fungal infections which can get worse when exposed to too much heat. Again, if this is the case, it is best that you have checked with your doctor whether foot and toe warmers are safe for you to use.

Brand

While branding isn’t everything, it can be an important aspect to consider. Certain brands are notorious for crafting high-quality products that are long-lasting and stylish by design.

There are many other brands that are equal in design and offer comforting features. It’s always advisable to research a brand before purchasing one of their products to get a feel for how satisfied wearers have been in the past. The best way to do so is by reading user reviews from verified consumers, that way you have a better shot at reading real reviews.

Value

The last criteria that we would like to share are regarding the price tag. Here’s the deal, no consumer wants to spend above their budget on a good. So, when we were evaluating items, we really took into consideration a few different things when it comes to price. Primarily, we really wanted to focus on sharing brands and products that offered a blend of a good price tag with great value.

To do this, we actually started off the buying guide by scanning through a couple dozen different types of footwear. We looked at the price range and came up with an average or an estimated market value. This number was then used in choosing the best products. For example, we would look at a product and ask ourselves:

  • How is this priced in comparison to the estimated market price?
  • Does this product offer value equal to or greater than its price tag?
  • How does this compare to the other products we have selected?
  • Does the consumer receive more or less value from this than another brand?
  • No matter the type of good you are planning on purchasing, by asking questions like above, it can really help to ensure you are receiving your money’s worth for a purchase.

    Expert Interviews & Opinions

    Most Important Criteria (According to our experts opinion)
    Sort criterias acording to:
    Experts Opinion Editors Opinion Users Opinion By Default
    Click on a to rate the most important criteria:
    #1
    Style
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    #2
    Safety Hazards
    Rate This Criteria as Most Important
    #3
    Use
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    #4
    Brand
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    #5
    Value
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    Helping Avoid Frostbite

    While foot warmers are great for when you come inside from the cold, or to use portable heating pads, like Hot Hands, while outside, they also help prevent frostbite in the extreme cold.
    If you find yourself needing to go out in temperatures below 15F, make sure you add a few warmers to your shoes to ward off any frostnip toes!

    Rejuvenate After A Long Day

    One other great benefit that foot warmers can do, is take away the tension from a long work day. After showering, sit down, and relax, and warm your feet up before hitting the sheets for some solid sleep. Your feet will thank you the next day!

    Frequently Asked Questions

    q: Can I reuse air-activated heat packs?
    a:

    All air-activated heat packs are disposable. However, some have succeeded in preserving the warmth for later by sealing them into a plastic bag after a couple of hours, when it is still warm, conserving the remaining heat for later use.

    q: Could I just use my hand warmers on my feet?
    a:

    Technically, yes. Air-activated hand heat packs contain the same ingredients as air-activated foot heat packs. However, the former isn’t designed for wearing inside of your shoes. They are bulkier and have no adhesive backing to fix them into place. This will result in discomfort that can ruin even the most exciting hikes or ski trips. If you know you’ll be using them for your feet, it’s best to just opt for the foot or toe heat packs.

    q: How long do heating devices stay warm?
    a:

    A typical air-activated heat pack can last anywhere from five to ten hours, and some for even longer. Heated slippers or mats that are powered by USB will obviously last for as long as they are plugged in.

    q: Can I just wear really thick socks instead of using heat sources?
    a:

    This will depend on the person. Some people are naturally inclined to have cold feet, in which case even thick thermal socks may seem useless. However, if you’re already inclined to have sweaty feet, a pair of high-quality thermal socks might be all you need. We recommend you try out different products to find what best suits you.

    Sources

    1. Wikipedia, Hand warmer,
    2. wiseGEEK, What are Thermal Socks?,
    3. East Mountain Sports, How to Use Hand & Toe Warmers,
    4. HealthLinkBC, Cold Temperature Exposure,