SmartWool Women's StandUP Over-The-Calf Graduated Support Socks 100% Wool Perfect for travelers, with mild compression to reduce foot swelling and fatigue Soft top, graduate compression, buried toe closure, micro-cushioned sole, knee-high height 61% wool, 34% nylon, 4% elastic Womens size Medium fits shoe size 7-9.5, size Large fits shoe size 10-12.6 Washer and Dryer friendly