Simple to use and featuring all-natural ingredients.Warmers are the perfect way to keep cold hands and feet warm while performing outdoor activities.Warmers are a safe, easy, and all-natural solution to cold hands and feet. Once opened and exposed to oxygen in the air, these disposable but environmentally-friendly warmers begin working in just minutes to provide several hours of steady, radiating warmth. Warmers are the paramount choice for outdoorsman, athletes, spectators, and anyone who works or plays outdoors. 1 Pair Per Pack. Up to 8 Hours of Heat. Safe, .Natural Heat. Environmentally Friendly. Air-Activated & Odorless