Specially designed for toes, these warmers fit the shape of the foot perfectly.The Toe Warmers are ultra-thin and suitable for any type of outdoor activity! Simply open the packaging and stick the warmers to the socks in the forefoot area - The warmer will begin to heat up very quickly and stay warm for up to six hours.- Heats on contact with the air.- Adhesive surface.- The heaters stick on the front of the foot.- Do not stick directly onto skin.- Heats up in 15 minutes.- Up to 6 hours of use.- Easy to use.- Single use.- Pack of 5 pairs of Warmers.Dimensions 70x95mm - Purely natural, odourless and ecological components (Water, Salt, Iron, Coal, Vermiculite).