Thaw Large Disposable Hand Warmers - 1 Pack - Don't "Bundle Up"..."Bundle Off" with Thaw's disposable hand warmer. The unique chemistry compound makes the disposable warmer last longer than others. When opened, air reacts to the ingredients inside the pouch to create a safe and long lasting heat so you can get on with your outdoor activities. Use it all day then dispose of it easily. With the THAW Disposable Large Hand Warmer, you don't have to let cold stand in your way. Features Each Single Packet Contains 1 x Large Hand Warmer 20+ hours of safe, natural heat Warms up to 124°F / 51°C Air-activated Odorless Ready-to-use Long lasting TSA approved 3 year shelf life