What temperature do the insole foot warmers reach and how often can they be used?

Our thermal insoles reach an average temperature of 39°C. If the warming time has not yet been used up: Pack insole foot warmers in a fresh-keeping bag and seal airtight.

I need size 39. The soles are offered in size 39-41. Isn't that too big for my shoes then?

The insole foot warmers are designed for the smallest size indicated and also fit perfectly for the other shoe sizes indicated.

What is the shelf life of the insole foot warmers and how are they disposed of?

The insole foot warmers can be stored for several years if unopened. You can read the exact expiry date on the package. Our insoles contain natural ingredients. This means that the foot warmers can be disposed of in the regular residual waste.

What is the optimal use for longer periods of sitting?

Make sure that the soles are supplied with enough air. If you sit still for a long time, it is advisable to move your toes in between. Loosen very air-impermeable shoes a little if necessary.

What is the optimal application in ski boots?

We recommend that you move your toes in between. This allows air to reach the pads. If the warming process really comes to a standstill, get out of your ski boots for a short time. The air will warm them up again after 10-15 minutes.

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TerraTherm Insole Foot Warmers - Air Activated

Product ID: 168338621

Details

Size
S (UK 3-5)
Brand
TerraTherm
Colour
30 Pairs
Material
fleece
Recommended uses for product
Ski

🌿natural heat-activated formula

🔥8h consistent warmth

🦶ultra-thin comfort fit

$54.11

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Description

🔥 Step into warmth, wherever winter takes you!

ECO FRIENDLY HEAT - Powered by natural ingredients like iron powder and activated carbon—no electricity needed.
INVISIBLE COMFORT - Ultra-thin design fits seamlessly into any shoe—from sleek heels to rugged ski boots.
INSTANT ACTIVATION - Heats up within minutes upon exposure to air, so you’re ready to brave the cold instantly.
ALL DAY TOASTY FEET - Enjoy up to 8 hours of steady 39°C warmth without any plugs or batteries.
VERSATILE WINTER ESSENTIAL - Perfect for outdoor adventures, stadium visits, winter markets, and everyday cold-weather wear.

TerraTherm Insole Foot Warmers deliver up to 8 hours of natural, battery-free heat at an average of 39°C. Ultra-thin and lightweight, these insoles fit discreetly into any shoe type, activated instantly by air exposure. Made from eco-friendly materials like iron powder and activated carbon, they’re ideal for winter sports, outdoor events, and daily cold-weather comfort.

Specifications

Color	30 Pairs
Size	S (UK 3-5)
Material type	fleece
Outer material	Fleece
Power source	Kein Strom
Seasons	Autumn/Winter
Features	Lightweight
Sport	Alpine Skiing
Included components	iron powder, salt, charcoal, vermiculite
Batteries included?	No
Brand	TerraTherm
Department	Women's
Manufacturer	BGT GmbH & Co.KG
Item model number	TT_FW_30S_001
Product Dimensions	23 x 7.5 x 0.3 cm; 2.25 kg
ASIN	B07T75MLC4

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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$54.11

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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