Our Mongrel Tasmanis Possum Boot Socks are pure luxury. Every pair of our Mongrel Tasmanis Possum Boot Socks has been designed and engineered for maximum comfort and warmth. Possum fibre has a unique hollow structure. This gives the possum fibre an extremely high warmth to weight ratio, creating a warm and comfortable garment without bulk. So efficient thermally is this sock, it can keep the wearer comfortable in wide ranging temperatures i.e. cool in the heat, warm in the cold even if that’s all in the one day. The extra thickness on the sole, & cushioning around the toe and heel, make these socks particularly comfortable.