Skull and Bones Women's Grip Sock Featuring skull embroidery on one sock, bones embroidery on the other. Patented grip designed to provide excellent traction. Extra silicon on the high contact areas: the ball and heel of the foot. Arebesk signature wash bag included with each pair- doubles as carrying bag and helps preserve sock and silicone longer. Fabric Details: 75% cotton 15% spandex 10% elastane SIZE CHART Small Medium Large U.S. Women’s Shoe 6-8 8.5-10.5 11-12 E.U. Women’s Shoe 36-38.5 39-42.5 -