As someone who always has cold feet on ski trips, cold work days and long winter hikes, I've been testing HeatPerformance remote heated insoles in sizes 39-41 (cut to fit my boots/shoes, shoe size 41). These thin soles with built-in carbon fiber heating elements and 3000 mAh batteries promise warmth for up to 8 hours - and they've been in my ski boots, hiking boots and work boots in temperatures from +5°C to -12°C.
First impressions and setup
The soles come in a sturdy box with remote control, two batteries, charger and cutting guide. They are extremely thin (about 3mm) and can be cut to exact fit - I cut them for my Salomon ski boots and Meindl hiking boots in 5 minutes. The batteries snap onto the side of the sole and sit discreetly under the ankle bone.
- Thickness: Only 3 mm - fits in all shoes/boots without changing the fit.
- Batteries: 3000 mAh - small and lightweight (approx. 100 g each).
- Remote control: Brilliant - change levels without taking off your boot.
- Heat distribution: Carbon fiber threads over the entire forefoot and heel.
Comfort and fit in boots
I used the soles in tight ski boots and hiking boots - and they are barely noticeable. No pressure points, no heating elements to bother. The fit after cutting was perfect - no creases or lifting.
- No bulk: Feels like regular insoles.
- Flexible: Bends with your foot - no rigidity.
- Discreet: The batteries sit flat along the ankle.
Heat performance in cold reality
The soles have 3 levels + boost mode - and they warm up in 20-30 seconds. I tested them in -18°C on skis in Norway:
- Level 1 (low): Comfortable background heat - 7-8 hours.
- Level 2 (medium): Perfect for cold lifts - 5-6 hours.
- Level 3 (high): Scorching hot - 3-4 hours (good for frostbite threat).
- Boost: 65°C for 5 min - great for cold toes after a break.
Combined with thin HeatPerformance socks: No cold feet on full ski days - first time in 15 years.
Battery life in practice (-10 to -18 °C)
| Level | Battery life |
| Low (1) | 7-8 hours |
| Medium (2) | 5-6 hours |
| High (3) | 3-4 hours |
| Boost | +5 min |
Charging: 3-4 hours - bringing a power bank solves everything.
Durability after one winter of use
After 40+ days of skiing, hiking and working (including machine washing boots), the soles hold up 100%. No heating elements have broken, the batteries are still strong and the soles look new.
- Washing: Can withstand wet boots - dries quickly.
- Wear and tear: No signs of wear despite heavy use.
- Batteries: Maintains capacity after 50+ charges.
Price and value
With a price tag of around DKK 1,500-1,700, the insoles are on the expensive end - but compared to Lenz or Therm-ic, you get better battery life and remote control for the same price. For those of us with chronically cold feet, this is life-changing.
- Value: Extremely high - if your feet get cold, it pays for itself the first winter.
Pros and cons
The benefits
- Warm in 30 seconds - no waiting time.
- Remote control - change level on lift or ride.
- Thin and discreet - fits in all boots.
- Long battery life - 5-6 hours on medium.
- Even heat - whole forefoot and heel.
- Cut-to-fit - perfect fit.
Disadvantages
- Price - high entry price.
- Batteries need charging - remember the routine.
- Only 3 levels - could have finer adjustment.
Conclusion
HeatPerformance heated soles with remote control are the best weapon against cold feet I've ever tried. They warm quickly, last all day and fit all boots - and the remote control is brilliant for skiing or working. If your toes get cold while skiing, hiking or working outdoors, these insoles are an absolute game-changer.
Perfectly combined with HeatPerformance socks and gloves - see the full set here.
Combine with other HeatPerformance products
FAQ - Heated soles with remote control
How hot do the soles get?
Up to 65°C on boost - level 2 is a comfortable 45-50°C.
Does the remote control work through boots?
Yes - up to 5-7 meters range.
Do they last a whole ski day?
Yes - 5-6 hours on level 2.
Can you use them in wet boots?
Yes - withstands moisture, but not immersion.
What boots do they fit in?
All - even tight ski boots.
