Outdoors & Fitness
The Best Heated Insoles: 4 Compared (and One to Skip)
We compared four battery and rechargeable heated insoles on control, battery and stated runtime, fit, and whether the maker says they suit ski and snowboard boots.
The short version
The Fieldsheer Premium BT Wireless Heated Insoles are our top pick because the battery is built in, the maker lists 2200 mAh, and control runs through an app or a touch button. The ActionHeat Rechargeable Heated Insoles with Remote are the value pick, with a key-fob remote and a stated runtime at each of three settings. The Therm-ic Heat Flat + C-Pack 1300B bundle depends on your boots: it is the only one the maker says fits ski boots, but it uses a calf-mounted battery pack on a cord. Skip the ActionHeat AA Battery Heated Insoles, which give only a 2+ hour runtime and lean on vague claims. For a different approach see our ski boot heaters, heated socks, and rechargeable hand warmers reviews. Best for: cold-weather workers and snow-boot wearers (Fieldsheer), budget remote control (ActionHeat), skiers (Therm-ic).
Our picks at a glance
- Fieldsheer (Mobile Warming) Premium BT Wireless Heated Insoles - Buy. The most fully specified insole in the field: built-in 2200 mAh battery, four heat levels, and phone control through the maker's app.
- ActionHeat Rechargeable Heated Insoles with Remote (AH-INS-LI-01) - Buy. A key-fob remote, three heat settings, and a stated runtime at every setting at a lower tier than the Bluetooth options.
- Therm-ic Heat Flat + C-Pack 1300B Bundle - It depends. A very thin trim-to-fit insole that the maker says fits all snow boots and ski boots, powered by external Bluetooth battery packs.
- ActionHeat AA Battery Heated Insoles (AH-INS-AA) - Skip. A low-spec disposable-battery insole whose maker page leans on vague claims and gives only a 2+ hour runtime.
The verdict in 30 seconds
What mattered most
- Power
- Control
- Heat settings
- Stated runtime
- Heat zone
- Trim to size
Heated insoles promise warm toes in cold boots without a full heated sock system. The catch is that the spec pages vary a lot: some give runtime at each setting, some give only one headline number, and only one names ski boots at all. We compared four current models from Fieldsheer (Mobile Warming), ActionHeat, and Therm-ic using only what the makers publish. Two earn a buy, one suits a specific rider, and one disposable-battery model is hard to recommend.
The most fully specified insole in the field: built-in 2200 mAh battery, four heat levels, and phone control through the maker's app.
Best for: Cold-weather workers and snow-boot wearers who want wireless control and a fully self-contained insole.
- The battery is built into each insole and the maker lists it as 3.7V lithium-ion, 2200 mAh, so there is no calf-mounted pack or cable to route.
- Four heat levels and Bluetooth control through the MW Connect app on a phone or smartwatch, plus a waterproof touch button on the insole itself.
- Marked with multiple size guides for trimming, and charges over USB-C with a split cable included.
- The maker gives two runtime figures on the same page (7+ hours and up to 9 hours) and no runtime at each heat level.
- The page does not say the insoles suit ski or snowboard boots; it names snow boots, workwear, and cold-weather footwear in general.
- Heat is a single zone under the toes, and some sizes were shown as unavailable when we loaded the page.
- The page says spot clean only and dry flat, so these are not a wash-and-forget item.
A key-fob remote, three heat settings, and a stated runtime at every setting at a lower tier than the Bluetooth options.
Best for: Anyone who wants a remote and honest per-setting runtimes without paying for an app-controlled system.
- The maker lists a runtime for each setting: about 3+ hours on high (140°F), 5+ hours on medium (120°F), and 8+ hours on low (100°F).
- A wireless remote with three settings, with buttons on the back of the insoles as a backup.
- Cut-to-fit sizing with a guide, in two size ranges, and a dual micro-USB cable included.
- The page does not give the battery capacity in mAh, so you cannot compare it against the other batteries on paper.
- Heat panels sit under the toes only, and the page does not state a zone count.
- The page says they fit all types of footwear and boots but does not mention ski or snowboard boots by name.
- Charging is micro-USB, and no charge time is stated.
A very thin trim-to-fit insole that the maker says fits all snow boots and ski boots, powered by external Bluetooth battery packs.
Best for: Skiers and snowboarders who want an insole the maker explicitly pairs with ski boots and do not mind a calf-mounted pack.
- The maker states it fits into all snow boots and ski boots, the only product here that says so about ski boots by name.
- Very thin and cut to your size, with marked cut lines for sizes 36 to 48.
- The C-Pack 1300B packs add Bluetooth, so heat can be adjusted from a smartphone, and the maker lists up to 13 hours of heat.
- Each insole has a power cord that runs up the heel along the calf to a separate battery pack, which is more to manage than a self-contained insole.
- The insole works only with Therm-ic C-Pack batteries, so you cannot swap in other packs.
- The page does not give the battery capacity in mAh or a runtime at each heat level.
- The maker warns not to cut the power cord or the heating element under the forefoot when trimming, so trim carefully.
A low-spec disposable-battery insole whose maker page leans on vague claims and gives only a 2+ hour runtime.
Best for: Occasional short outings in mild cold where a rechargeable model would be overkill.
- It is the lowest entry point to heated insoles, and AA packs can be swapped in the field.
- Cut-to-fit sizing and heating panels under the toes, in the same two size ranges as the rechargeable model.
- The maker lists a 1-year warranty and 30-day returns, site-wide.
- Runtime is stated only as more than 2 hours, with no runtime at any setting, which is short for a ski day.
- Batteries are not included, and each pack takes three AA cells, so a full day means carrying and buying spares.
- The product page describes a single on/off button, while the maker's collection page lists three heat settings, so the maker's own pages disagree.
- Copy such as 'highest UL ratings' and 'designed to warm the core body temperature' is vague marketing with no certificate or test given.
| Criteria | Premium BT Wireless Heated Insoles Top pick | Rechargeable Heated Insoles with Remote (AH-INS-LI-01) | Heat Flat + C-Pack 1300B Bundle | AA Battery Heated Insoles (AH-INS-AA) |
|---|---|---|---|---|
| Verdict | Buy it | Buy it | It depends | Skip it |
| Best for | Cold-weather workers and snow-boot wearers who want wireless control and a fully self-contained insole. | Anyone who wants a remote and honest per-setting runtimes without paying for an app-controlled system. | Skiers and snowboarders who want an insole the maker explicitly pairs with ski boots and do not mind a calf-mounted pack. | Occasional short outings in mild cold where a rechargeable model would be overkill. |
| Price tier | $$$ · premium | $$ · mid-range | $$$ · premium | $ · budget |
| Power | Built-in 3.7V, 2200 mAh | Built-in 3.7V, mAh not stated | External C-Pack 1300B packs | 3 AA cells per pack, not included |
| Control | Touch button plus Bluetooth app | Wireless remote plus back buttons | Bluetooth via smartphone | On/off button (page lists no settings) |
| Heat settings | 4 levels, 90 to 135 | 3 settings, 100 to 140°F | Adjustable via app | Up to 140°F, settings unclear |
| Stated runtime | 7+ hours (up to 9 elsewhere) | 3+ / 5+ / 8+ hours by setting | Up to 13 hours | More than 2 hours |
| Heat zone | One, under toes | Under toes, count not stated | Under forefoot, count not stated | Under toes |
| Trim to size | Yes, multiple size guides | Yes, cut-to-fit guide | Yes, sizes 36 to 48 | Yes, cut-to-fit guide |
| Ski or snowboard stated | No (snow boots, workwear) | No (all boots) | Yes (snow and ski boots) | No (all boots) |
| Charging | USB-C, 3+ hours | Dual micro-USB, time not stated | USB charger included | Swap AA cells |
Which one is right for you?
- Cold-weather workers and snow-boot wearers who want wireless control and a fully self-contained insole. Buy it Fieldsheer (Mobile Warming) Premium BT Wireless Heated Insoles
- Anyone who wants a remote and honest per-setting runtimes without paying for an app-controlled system. Buy it ActionHeat Rechargeable Heated Insoles with Remote (AH-INS-LI-01)
- Skiers and snowboarders who want an insole the maker explicitly pairs with ski boots and do not mind a calf-mounted pack. It depends Therm-ic Heat Flat + C-Pack 1300B Bundle
- Occasional short outings in mild cold where a rechargeable model would be overkill. Skip it ActionHeat AA Battery Heated Insoles (AH-INS-AA)
How we judged the field
Five things matter in heated insoles. First is control: a wireless remote or phone app beats reaching into a boot, and on-insole buttons are only a backup. Second is battery, meaning capacity where the maker states it and runtime at each setting, since a single headline number usually describes the lowest heat. Third is heating zones, and whether the maker says what is heated. Fourth is fit, including whether the insole can be trimmed to size and whether a cable has to run up the leg. Fifth is whether the maker states the insole suits the boots you wear, especially ski or snowboard boots, since a tight boot leaves little room.
The field splits into self-contained insoles with the battery built in, and insoles that wire to an external pack. We picked Fieldsheer and ActionHeat to represent the self-contained group, Therm-ic for the external-pack, ski-specific approach, and ActionHeat’s AA model as the disposable-battery option. Lenz and Hotronic make heated insole and foot-warming systems too, but Hotronic is covered in our ski boot heaters review and Lenz’s set is sold through a European shop, so we left them out. We could not find a current heated insole from Thermacell or Sidewinder on a maker page.
The Fieldsheer Premium BT is the only insole in this group where the maker states the battery capacity: 3.7V lithium-ion, 2200 mAh, built into the insole. That matters because it removes the cable and calf pack that every external-battery system needs. You get four heat levels from 90 up to 135 degrees (the page does not state a unit), a waterproof touch button on the insole, and Bluetooth control through the MW Connect app on a phone or smartwatch. Trimming is supported with multiple size guides, and charging is USB-C at 3+ hours with a split cable included. The weak spots are specific. The page quotes both 7+ hours and up to 9 hours per charge and never gives a runtime at each level, so plan on the shorter figure for a long day. It also does not say the insoles suit ski or snowboard boots, naming snow boots, workwear, and cold-weather footwear instead. Heat is one zone under the toes. For work boots, snow boots, and winter hiking it is the cleanest setup here. Skiers should check boot volume before buying.
ActionHeat’s rechargeable model is the value pick because it gives the most useful runtime information at a lower tier. The maker lists three settings with temperatures and runtimes: high at 140°F for 3+ hours, medium at 120°F for 5+ hours, and low at 100°F for 8+ hours. A wireless key-fob remote switches between them, and buttons on the back of the insoles do the same job if the remote goes missing. The battery is a built-in 3.7V cell, though the page gives no mAh figure, and a dual micro-USB cable is included. Fit is cut-to-fit with a sizing guide, in S/M (men’s 4 to 9) and L/XL (men’s 9.5 and up) ranges. The compromises are honest ones. Heat panels sit under the toes, no zone count is given, and the page says the insoles fit all types of footwear and boots without naming ski or snowboard boots. No charge time is listed. It suits someone who wants remote control and predictable runtimes without an app.
Therm-ic is the one maker here that says its insole fits into all snow boots and ski boots. The Heat Flat is described as very thin and easily cut to your shoe size, with marked cut lines for sizes 36 to 48. The C-Pack 1300B batteries in this bundle add Bluetooth, so you can adjust the heat from a smartphone, and the maker lists up to 13 hours of heat. The trade-off is the layout. A power cord runs from each insole up the heel along the calf to a separate battery pack, and the insole works only with Therm-ic C-Pack batteries. The page gives no mAh figure and no runtime at each level, and it warns you not to cut the power cord or the forefoot heating element while trimming. For a skier who already tolerates a calf pack, that is a fair deal. For a worker in work boots who wants a plug-and-forget insole, the self-contained options are simpler. We cover the Heat Kit and C-Pack 1700B separately in our ski boot heaters review.
The ActionHeat AA insole is easy to like at first glance and hard to recommend after reading its own pages. Each side takes three AA cells in a power pack, batteries are not included, and the maker states heat up to 140°F for more than 2 hours. There is no runtime at any setting, which is thin for a day on snow. The product page describes a single on/off button, while the maker’s collection page lists three heat settings, so even the basic control story is unclear. The copy relies on phrases like ‘highest UL ratings’ and ‘designed to warm the core body temperature’, with no certificate, test, or number behind them. Heat is limited to panels under the toes, and the insoles are described as fitting all types of footwear and boots, with no mention of ski or snowboard boots. Spare AA cells add weight and ongoing cost for any long day. If you need heated insoles at all, step up to a rechargeable model with stated runtimes. This one is only for short, mild-cold outings.
Fieldsheer (Mobile Warming) Premium BT Wireless Heated Insoles vs ActionHeat Rechargeable Heated Insoles with Remote (AH-INS-LI-01): which should you buy?
The Fieldsheer and ActionHeat rechargeable models are both self-contained, trimmable, and remote-controlled, so the choice comes down to what you value. Fieldsheer gives you a stated 2200 mAh battery, four heat levels, an app, and USB-C charging. ActionHeat gives you a key-fob remote and the clearest runtime table: 3+, 5+, and 8+ hours at three settings. If you want to plan a day around the numbers, ActionHeat’s table is easier to use.
Choose Fieldsheer if you like an app, want USB-C, and wear snow boots or work boots. Choose ActionHeat if you want a simple remote and a runtime you can plan around, and if you are comfortable that the maker only says the insoles fit all boots. Skiers who want the maker to say ski boots should look at the Therm-ic bundle instead.
What to look for
- Control method: A wireless remote or app is easier to use with gloves on than buttons on the insole, and a backup button is a bonus.
- Stated battery capacity: A maker that lists mAh is giving you something to compare, and one that does not leaves you relying on runtime claims.
- Runtime by setting: A single hour figure normally describes the lowest heat, so look for a table by level.
- Self-contained or wired: A built-in battery avoids a cable up the calf, while an external pack can be larger and swappable.
- Trim-to-size guidance: Cut lines or a sizing guide matter, and follow any warning about not cutting the power cord or the heating element.
- Boot suitability: Look for the maker naming ski or snowboard boots, not just ‘all footwear’, because tight boots leave little volume for thickness.
Our final take
For most cold-weather wearers, the Fieldsheer Premium BT is the best-documented all-round insole, with a built-in 2200 mAh battery, four levels, and app control. The ActionHeat Rechargeable with Remote is the smarter budget choice if you want a remote and per-setting runtimes. Skiers who want the maker to say ski boots should consider the Therm-ic Heat Flat bundle, accepting a calf-mounted pack. We would not buy the ActionHeat AA model: its 2+ hour runtime and vague claims make it a poor fit for a day outdoors. For a full boot heating system, see our ski boot heaters review.
Questions, answered
Do heated insoles work in ski boots?
Some do, but check what the maker says. Only the Therm-ic Heat Flat bundle in this group states that it fits into all snow boots and ski boots. The ActionHeat pages say their insoles fit all types of footwear and boots, and Fieldsheer names snow boots and workwear, but neither names ski or snowboard boots. Ski boots are tight, and an insole that adds thickness can change how the boot fits. Trim carefully and try the boot on before a full day.
Is a wireless remote or on-insole control better?
It depends on your boots. A remote or phone app lets you change heat without taking off a glove or opening a boot, which is useful in a snow boot or ski boot. On-insole buttons are a fine backup but hard to reach mid-day. ActionHeat's rechargeable model has both a remote and buttons on the insoles. Fieldsheer has a touch button and an app, and Therm-ic's 1300B packs use a smartphone.
How long do the batteries last?
Read the runtime carefully. ActionHeat's rechargeable model lists 3+ hours on high, 5+ on medium, and 8+ on low. Therm-ic lists up to 13 hours of heat, and Fieldsheer lists 7+ hours in one place and up to 9 in another, with no per-level figures. Runtime depends on the setting, so a single headline number usually describes the lowest one. Choose based on the setting you will actually use.
Can I trim heated insoles to fit?
All four can be trimmed. Fieldsheer marks multiple size guides, ActionHeat provides a cut-to-fit sizing guide, and Therm-ic marks cut lines for sizes 36 to 48. Therm-ic specifically warns not to cut the power cord or the heating element under the forefoot, so follow the marked lines and cut conservatively. A trimmed insole usually cannot be returned for a different size.
Are disposable-battery insoles worth it?
Usually not for a full day. The ActionHeat AA model states more than 2 hours of heat with no runtime at any setting, and the batteries are not included. You would need to carry and swap AA cells. A rechargeable model with a stated runtime at each setting is easier to plan around. See our ski boot heaters review for a full boot-heating system.
Deciding between the top two? See our head-to-head: Fieldsheer (Mobile Warming) Premium BT Wireless Heated Insoles vs ActionHeat Rechargeable Heated Insoles with Remote (AH-INS-LI-01).
