Designed for the cold, the Starston is insulative, moisture-wicking and waterproof. A merino wool interior, with terry-loop knitting, has strong thermal properties. Merino wool absorbs moisture away from the body, improving breathability. An engineered nylon blend exterior has similar moisture wicking properties, highlighting the cohesive functionality of the garment. The Starston's Aquaselaz™ membrane is 100% waterproof, sitting discretely in the mid-section of the sock. Essential for an extensive range of mountaineering and climbing disciplines, involving high-up, cold temperature terrains. Premier hiking socks.