Humphrey Law Luxury Alpaca Blend, exceptionally warm socks. Alpaca fibre is soft, supple and smooth and contains microscopic air pockets which are perfect for keeping feet warm. As alpaca is a luxury fibre these men's socks are not recommended for high abrasion use such as walking boots. Size: ladies 8-11, men's 7-11, Euro 40-45. Foot length: 25-29cm. Colour: denim. Contents: 60% alpaca, 20% wool, 17% nylon, 3% elastane.