These socks are made with 75% Ultra-wicking Micro Denier 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. These socks are THE Most Comfortable Socks you'll ever wear. These socks fit shoe size 6-10.