Colors in this sock: Orange, Sky Blue, Light Blue, Yellow-Green and Flame Red. 62% Recycled Cotton, 22% Recycled Polyester, 15% Nylon, 1% Lycra Care Instructions: Our socks will shrink a little in their first washing; however, they are knit on the larger size to accommodate this and do stretch out once worn again. We recommend you machine wash your socks on gentle. No bleach. Dry on cool. For a more eco-friendly cleaning process, we recommend you hand-wash your socks and air-dry them. *Air-drying your clothes can reduce the avg. household’s carbon footprint by up to 2,400 lbs. a year!