Warming insoles for shoes. The bottom side is equipped with a non-slip layer. They work using a proven oxidation process when exposed to air. They provide pleasant warmth up to 45 °C, averaging around 37 °C inside closed shoes.
Perfect for cold winter conditions where you can’t warm up by moving – in a hunting stand, at a hockey game, at an outdoor party in low temperatures, on the water, or in boots with cold feet, etc.
