Indestructawool™ technology with extended durability zones. 4 Degree™ elite fit system for a dialed-in, performance-oriented fit. Additional body-mapped mesh zones for added breathability. Virtually Seamless™ toe for enhanced comfort. Comfort welt with 'stay put' fit. CONTENT: 53% Merino Wool 12% Nylon 33% Recycled Nylon 2% Elastane. HEIGHT: Mid Crew. CUSHIONING: Light Cushion. Women's specific fit. Height 5.5".