The Yaktrax Warmers adhesive foot warmer provides 5 hours of natural heat after opening! You are going skiing with snowshoes or in a cold environment, don't forget your heaters. They are light, barely 50 g but essential for your comfort and safety in extreme conditions. How it works ? When exposed to oxygen in the air, the iron filings inside the pocket begin to oxidize, creating a rapid rusting process which in turn produces waste heat. The salt acts as a catalyst, while the carbon helps disperse heat evenly. Vermiculite acts as an insulator that prevents heat from dissipating too quickly.

Yaktrax Warmers Foot Warmers Features:

• Sold in 3 pairs
• Provides 5 hours of heat
• Weight: 32 g per pair
• Instructions for using the heater: open the bag, shake it in the air for a few seconds and insert it in the desired location.