COPPER FIT™ GRIPPER SOCK SET provides soothing compression and lightweight support to feet and arches. Copper-infused polyester/spandex blend wicks away moisture and absorbs odors while rubberized gripper soles prevent slipping. S/M fits women’s shoe sizes 6-10, men’s shoe sizes 5-9; L/XL fits women’s sizes 10-13, men’s sizes 9-12. Gentle wash. Two-pair set: 1 pr. black,1 pr. white.