The Tall Tube 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% Nylon Wash Care Hand wash, Air dry or Gentle laundry cycle, low dry The Features * Weaved-in arch support for the best fit * Stay up technology with tension levels around the calf adjusted for no slipping down socks * Y-sticked heel to create a natural cup around your heel * Reinforced toe for long-lasting wear * Cushioned performance footbed for the most comfortable fitting sports sock.