SOCKS PEAK BLACK/GREYHigh performance hiking socks are worth their weight in gold. The Peaks are made in New Zealand from the proven Herculan fibre (strong wool). Herculan is a world first technology which has enabled us to create something that has not been impossible until now. This blend provides a solid balance of durability, comfort, warmth, and movement. The Peaks design is shaped to the contours of your lower leg, ankle, and foot. This means the sock locks in place