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£0.99The Heat Company Insole Foot Warmers Size M EU 39-41 1 Pair
Availability: Out of stock · seller last confirmed 11 Sep 2026 · not shown in site search while out of stock
The Heat Company Insole Foot Warmers are extra-thin, air-activated warming insoles for adults spending time outdoors in cold conditions. This pack contains one pair in size M for EU shoe sizes 39-41, providing comfortable warmth across the sole for up to eight hours without batteries.
Pack Contains
1 pair of size M insole foot warmers, suitable for EU sizes 39-41 and UK sizes 5.5-7. Approximate packaged weight: 46g.
Key Features
Provides up to eight hours of warmth
Activates naturally when exposed to air
Reaches approximately 40°C during use
Extra-thin profile fits inside everyday shoes, boots and sports footwear
No batteries, charging or cables required
Suitable for walking, hiking, skiing, gardening and other cold-weather activities
Product Details
Brand: The Heat Company
Product: Insole Foot Warmers
Size: Medium
Shoe size: EU 39-41 / UK 5.5-7
Pack size: One pair
EAN: 9006746122151
Composition
Activated carbon, iron powder, salt, water and vermiculite.
Directions
Open the sealed package and allow the insoles to activate in the air for a few minutes. Place one warmer inside each shoe with the textile side facing upwards and the smooth side facing downwards.
Storage
Keep the airtight package sealed until required. The warmers remain usable for several years when left unopened. Once completely cool after use, dispose of them with ordinary household waste.
Frequently Asked Questions
What size footwear will these fit?
Size M is designed for EU shoe sizes 39-41, equivalent to approximately UK sizes 5.5-7.
How long do the insoles stay warm?
They provide warmth for up to eight hours after activation.
Do they require batteries?
No. The insoles generate heat through natural air activation after the package is opened.
Keep your feet more comfortable during winter walks, outdoor work and cold-weather activities with convenient full-sole warmth. Simply open, activate and place the pair inside your footwear when needed.
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