Key Features:Made with 75% Ultra-wicking M.D. Acrylic, 15% Nylon, and 10% Spandex for exceptional comfort and strength,ALL of our socks feature our \"Stretch-to-Fit\" sizing system and our exclusive \"Easy-Fit\" cuff for a PERFECT FIT every time on any foot. ,These features create superior softness and comfort and help eliminate blisters and hot spots. ,We also feature a double stitched heel & toe for added strength and durability. ,We deliver Superior Quality and High-Tech Comfort in every SockGuy sock we make. We guarantee it.,Cuff Height :1\",Size: S/M (4-7) L/XL (7-12).