Features of the Smartwool Women's Compression Sightseeing Sunflower Printed Over The Calf Sock Virtually seamless toe for enhanced comfort Supportive arch brace Women?s specific Fit; narrower heel and Slimmer Fit Cushion on ball and heel of foot for all day comfort Fabric Details 53% Merino Wool, 43% Nylon, 3% Elastane, 1% Polyester