The Craft Warm Mid socks provide support and comfort, and keep your feet warm. The Pressure-Point technology ensures the socks provide support to the pressure points on your feet. The Warm Mid socks have an ergonomic fit. The wool integrated into the soles of the feet makes sure they stay warm. This makes the socks ideal for use in cold conditions (0 to -30 degrees). Because of the excellent breathability of the mesh panels, your feet won't quickly overheat. It also means your feet don't get sweaty nearly as soon, aiding heat preservation.