Which size should I pick?

S fits US men's 3.5–7 and women's 5–9 (UK 2.5–6.5), L fits US men's 8–12 and women's 9.5 and up (UK 7–11). Trim either one to length at the toe – the chart shows the insole length for each shoe size.

How long do the batteries last?

Up to 16 hours at 104 °F (40 °C) and about 7 hours at 122 °F (50 °C), per the manufacturer. In hard frost and on higher settings it's less.

How do I charge them?

With the two included USB cables, from a wall adapter or the BergHeat Power Bank. A full charge takes 2 to 3 hours. The insoles don't heat while charging.

The app for pairing is named in the included instructions. It lets you control temperature and timer for each foot.

Will they fit any shoe?

Most winter boots and hiking shoes with a removable insole. They're a little thicker than a regular insole, so very snug shoes often won't take them.

Yes, but only at the toe along the printed guide lines. Never cut into the battery area.

Beheizte Einlegesohlen BergHeat Spur als Paar mit Heizfläche

Insoles with a built-in battery. No cable leaves the shoe, no battery box sits on the cuff. Set temperature and timer on your phone.

3,000 mAh battery in each insole, sealed compartment
Presets at 104, 122 and 140 °F (40, 50 and 60 °C), 86 to 158 °F (30 to 70 °C) in the app
Left and right separately, timer 15 to 120 minutes
Display in °F or °C
Run time up to 16 h at 104 °F (40 °C), about 7 h at 122 °F (50 °C) per the manufacturer

How long a charge lasts depends on the setting, the cold and your footwear.

Sizes

S: US men's 3.5–7, women's 5–9, UK 2.5–6.5
L: US men's 8–12, women's 9.5 and up, UK 7–11
Trim the toe along the guide lines to your length

In the box

1 pair of insoles
2 charging cables
Instructions (English)

Charging

Via USB from a wall adapter or the BergHeat Power Bank, 5 V / 2 A
About 2 to 3 hours; the insoles don’t heat while charging

For days when you stand or sit still in the cold for a long time.

Ice fishing, hunting stands, stadiums
Winter hikes and breaks on ski tours
Working outdoors on cold ground

Tip: pre-warm them in the app before you head out and step into warm boots.

BergHeat Track – Heated Insoles with Battery and App

Heated insoles with the battery built in – app-controlled, each foot on its own.

3,000 mAh battery in each insole, no cables
App control: left and right separately, 86–158 °F (30–70 °C)
Up to 16 h at 104 °F (40 °C) per the manufacturer
Trims to your shoe size

$147.59

Ships within 24 h on business days Email support Secure checkout

Ships in 24 h on business days

App control

Trimmable

At a glance

The battery lives in the insole

3,000mAh

Battery
Built into each insole.
16h

Run time
At 104 °F (40 °C); about 7 h at 122 °F (50 °C).
86–158°F

In the app
30–70 °C, left and right separately.
2–3h

Charging
Via USB, 5 V / 2 A.

Run times per the manufacturer; they depend on temperature and footwear.

Mann beim Eisangeln stellt die Temperatur der Sohlen am Handy ein

App control

Left foot cold? Warm up just that one

Set the temperature on your phone – for both feet together or each one on its own. The app shows how warm the insoles are right now and lets you set a timer. No need to take your boots off.

Left and rightControl them separately or together.
86 to 158 °F (30 to 70 °C)Presets at 104, 122 and 140 °F (40, 50 and 60 °C).
Timer15 minutes to 2 hours.

Track size chart: US men's, US women's and UK sizes with insole length in inches and cm

Fits your shoe

Two sizes, trimmed to yours

Pick S (US men's 3.5–7, women's 5–9) or L (US men's 8–12, women's 9.5 and up). At home, lay your old insole on top and trim the toe along the guide lines. Leave the battery area alone.

Trim the toe onlyAlong the printed guide lines.
Sealed batteryFully enclosed in the foam.

Day to day

What else they bring

Beheizte Einlegesohle Spur wird in einen Winterstiefel geschoben

Wire-free

Slip them in and go

No cable up your boot, no battery pack on your calf.

Foam

Handles sweat

Water- and sweat-resistant per the maker.

Charging

2 cables included

Charge both at once.

Einlegesohle Spur wird vorn entlang der Markierung mit der Schere zugeschnitten

Trimming

All it takes is scissors

Lay your old insole on top and trim the toe.

Frequently asked questions

S fits US men's 3.5–7 and women's 5–9 (UK 2.5–6.5), L fits US men's 8–12 and women's 9.5 and up (UK 7–11). Trim either one to length at the toe – the chart shows the insole length for each shoe size.
Up to 16 hours at 104 °F (40 °C) and about 7 hours at 122 °F (50 °C), per the manufacturer. In hard frost and on higher settings it's less.
With the two included USB cables, from a wall adapter or the BergHeat Power Bank. A full charge takes 2 to 3 hours. The insoles don't heat while charging.
The app for pairing is named in the included instructions. It lets you control temperature and timer for each foot.
Most winter boots and hiking shoes with a removable insole. They're a little thicker than a regular insole, so very snug shoes often won't take them.
Yes, but only at the toe along the printed guide lines. Never cut into the battery area.