The Everyday Washable Cashmere Our exclusive cashmere and merino wool performance blend tall tube socks for your winter moves! Our stay-up technology and extra arch support make for the best fitting-over the-knee sock in the land!The Fabric: 9% Cashmere | 28% Acrylic | 18% Polyester | 45% NylonWash Care: Hand wash, Air dry or Gentle laundry cycle, low dryThe Features:Weaved-in arch support for the best fitStay up technology with tension levels around the calf adjusted for no slipping down socksY-sticked heel to create a natural cup around your heelReinforced toe for long-lasting wearCushioned performance footbed for the most comfortable fitting sports sock. Note: This is not a grip sock.