Design: Women's specific fit Indestructawool(TM) Technology with extended durability zones 4 Degree(TM) Elite Fit System for a dialed-in, performance-oriented fit Virtually Seamless(TM) toe for enhanced comfort Mesh zones for added breathability Additional body-mapped mesh zones for added breathability Comfort welt with 'stay put' fit Additional Details Sock Height: Crew Targeted cushioning is strategically placed for comfort without the bulk Machine Wash Warm, Inside Out; Do Not Dry Clean; Do Not Iron; Tumble Dry Low; Do Not Bleach 54% Merino Wool 43% Nylon 3% Elastane