Nano Glide for moisture control and bacteria-inhibiting Copper CuTec With graduated compression and light cushion in the feet area, these socks help relieve tired feet and absorb impact from a hard days work or play. Seamless toes and Nano Glide uppers provide optimal moisture-wicking control and incredible friction management for blister-free wear. Copper CuTec in the toes and heels reduces bacterial and fungal growth and helps control odors for better skin health. Supportive arches. 30% nylon, 16% Copper CuTec, 12% Nano Glide nylon, 6% polyester, 6% Lycra. Made in USA. Sock compression ratings: Ankle 17, Above Ankle 15.7, and Upper Calf 13.9. Height: 15. Mens sizes: M(6-8), L(9-12), XL(13-15). Color: Black. Type: Socks.