Harkila All Season Wool ll Sock is made with a Merino Wool mix with reinforcement in Achilles tendon area for extra comfort. The leg area is elasticated with flat toe seams to prevent rubbing or blisters and keep your feet comfortable for long periods of time. Harkila All Season Wool ll Sock is made with Merino Wool designed to offer a good, comfortable, all round sock that is suitable for all uses Available in Black in sizes S-XL (UK 2-16) Composition 58% Merino wool, 40% Polyamide-Nylon, 2% Elastane which gives extra warmth from the long Merino Wool fibres and comfortable to wear next to the skin with a good stretch Flat toe seam, extra comfort and no irritation Shinbone protection & very breathable Target cushion sole to prevent blisters Additional nylon reinforcement in Achilles area to offer additional protection Elastic band in leg for a great comfortable fit Excellent fitting unisex sock ideal for all sporting activities Size: S - UK2-4 (EU35-38), M - UK5-8 (EU39-42), L - UK9-11 (EU43-45), XL - UK12-16 (EU46-50)