This sock is specially constructed with wool inside and CoolMax outside to efficiently wick perspiration away from the skin. Moreover, its wool cushion sole is designed to withstand impact and retain its resilience during high intensity sports and workouts. According to customer Zac, "I completed a half marathon wearing these socks - they are incredibly comfortable." 100% Owned and made in Australia by Humphrey Law who source wool locally in Victoria from ethically growers and use solar electricity to manufacture every second pair of socks.