68% Polyester 26% Cotton 4% Viscose 2% Elastane Machine Washable These socks come in a 3 pair pack and there are 3 colours to choose between. They are a size 5-9 US. The performance polyester and cotton composition of these boot socks efficiently absorbs, then wicks away moisture. This means that you will have less chance getting sweaty feet and blisters. They have a terry cushioned heel and toe to give your feet a buffer from harsh terrain. They also include an arch support feature to guard against fatigued feet and to keep you going throughout the day.