Hand Warmers Portable and Re-Usable (4 Pack) 2 Maroon with White Snow Flakes and 2 Sea Blue Set of 4 Hand Warmers That Can be Re-Used Up to a Thousand Times. To Activate, Simply Bend the Metal Disc Inside. For Heat up to 130 Degrees. To Re-Activate Simply Put The Hand Warmers in Boiling Water for 15 Minutes. Once Re-Activated, The Hand Warmers Are Ready for Use for Months waiting for Activation. Perfect for Coat and Pants Pockets, Purses, Glove Compartments Etc.