HotHands Adhesive Toe Warmers are the perfect everyday solution for cold toes. Featuring a thin unique rounded toe and adhesive backing they are designed to function in the low oxygen environment of boots and shoes. They feature an ultra-thin design and rounded shape that leaves room for socks and feet and offers optimal comfort in both boots and shoes. Activated charcoal on the inside absorbs and reduces odors. Simply stick the warmers to the outside of your sock under your toes and enjoy up to 8 hours of warmth.