Yaktrax Foot Warmers are a safe, easy, and all-natural solution to dealing with cold feet. Once opened and exposed to oxygen in the air, these disposable but environmentally-friendly warmers begin working in just minutes. Slide them inside your boots to create a warming barrier for your feet that lasts up to 5 hours. Yaktrax Warmers are the ideal choice for outdoorsman, winter athletes, spectators, and anyone who works or plays outdoors.

• 2 Warmers Per Pack
• Up to 5 Hours of Heat
• Safe, Environmentally Friendly, Air-Activated, Odorless Heat.
• Ideal for keeping warm when camping, hunting, fishing, skiing, watching sports and outdoor events, and more