Inov-8 Extreme Thermo Sock High

The EXTREME THERMO SOCK HIGH is a neoprene sock designed for winter running when the temperature is cold and underfoot conditions are wet. The sock acts as an insulating layer allowing water in and holding it there where the water then heats up to keep the feet warm. The ankle cuff is seam-free which reduces pressure on the leg and allows a close fit without irritation.