HotHands Hand Warmers - Long Lasting Safe Natural Odorless Air Activated Warmers - Up to 10 Hours of Heat - 40 PairSAFE, NATURAL LONG LASTING HEAT Odorless, Disposable, Single Use Item, Do Not Apply Directly to The Skin. TSA Approved. Made in the USA using domestic and imported materials. No shaking or kneading required TO ACTIVATE Remove warmer from outer package, shake to activate. Warmer heats up in 15 30 minutes. If heat decreases, expose warmer to air and shake. After use, dispose with regular garbage. Ingredients will not harm the environment. MULTIPURPOSE