Beat the Cold with the HotHands Neck Warmer! We've got you covered, no matter what cold stress situation you find yourself in. Each Neck Warmer lasts up to 8 hours and provides fast heat that doesn't need to be recharged or reheated. It's easy to use, convenient to pack in a backpack or toolbox, and can be disposed of with regular trash. HotHands Warmers are made with natural ingredients that don't harm the environment and have a four year shelf life if stored in a cool, dry place. Features: Natural, Long-lasting Heat - Each HotHands Neck Warmer is made with natural ingredients and lasts up to 8 hours. How To Activate - Open the package, expose the warmer to air, and allow 15-30 minutes to heat up fully. If warmth decreases, expose the warmer to air again and shake. After use, dispose of with regular trash Quality Ingredients - Each HotHands Neck Warmer is made in the USA using domestic and imported materials and natural ingredients that don't harm the environment like iron, water, vermiculite, charcoal, polymer & salt. Convenient & Portable - Small enough to pack in a backpack and safe enough to go through TSA, HotHands Neck Warmers are easy to travel with no matter where you're going. Material: Nylon Specifications: Size: One Size Brand: HotHands Color: White Material: Nylon Recommended Uses For Product: Walking, Cycling, Skiing, Snowboarding, Hiking Included Components: Neck Warmer Lower Temperature Rating: 122 Degrees Fahrenheit Reusability: Single Use Upper Temperature Rating: 140 Degrees Fahrenheit Item Package Dimensions L x W x H: 11.14 x 9.49 x 1.81 inches Package Weight: 0.13 Kilograms Item Dimensions LxWxH: 0.5 x 2 x 25.5 inches Model Name: Neck Warmer Suggested Users: unisex-adult Number of Items: 1