ProTrek Four Season Trekking Sock Superior, walking sock for maintaining foot comfort in all weather conditions. Made with ultra-durable, moisture wicking, scientific wool blend, to ensure long-lasting comfort Reinforced heel and toe for extra durability and comfort Sculpted cushioned zones maintain sock shape and fit. Ankle and arch support. Graduated rib keep socks in place all day. Ventilating mesh zones enhance breath ability and prevent perspiration dampness Special flat seam over toes prevents pressure points and improves fit Lower calf length Made with a scientifically-engineered fabric that's ultra-durable, and provides the ultimate in moisture-wicking and breathability to ensure long-lasting comfort Ideal for all year round wear, suitable for all terrains, for long or short trips Composition; 37% Polyamide, 32% Polypropylene, 30% New Wool, 1% Elastane In both Men's and Ladies' sizes. Sizes; 4-7, 6-11, 11-13 Colours; Grey/Blue, Mid Grey, Navy/Red