Padded Toes: Extra midweight terry cushions toes; Protective Cushion: Padded footbed increases comfort; Total Foot Utilization: Supports full-foot alignment and engagement; Optimized for: Hiking & Backpacking; Fiber Content: Liner Fiber content: 75% CoolMax EcoMade, 21% Nylon, 4% Lycra;Hiker Fiber content: 43% Wool, 43% Acrylic, 12% Nylon, 2% Lycra; Care Instructions: To extend the life of your socks, wash on delicate with cold water, followed by line drying