Description Another popular sock with the ladies at Smartwool, the cushioned Saturnsphere keeps feet warm, dry and comfy. Features Signature Smartwool® sock Supportive arch brace Women's specific fit; narrower heel and slimmer fit 63% Merino Wool, 36% Nylon, 1% Elastane Style: SW0SW725 Benefits Medium Cushion Medium Cushion Medium cushioning for impact absorption Women's Specific Fit Women's Specific Fit Women's specific fit; narrower heel and slimmer fit Care Machine wash warm, wash inside out. Do not bleach. Tumble dry low. Do not iron. Do not dry clean.