Take on the outdoors in any condition. These single-use heat packs provide air-activated warmth in even the most extreme conditions. They're available in a variety of styles designed for your hands, feet, and body. Grab yours today!________________________________________________________________Skiing & SnowboardingLong-distance runningHunting & FishingHigh-Altitude HikesEmergency Prep Kits________________________________________________________________12 hours of heatMega warmer is larger size and longer lastingReady to useAir-activated