New Balance LC2 with Coolmax Sock polyester Made of 58% Coolmax;31% Polyester;10% Nylon;1% Lycra; CoolMax Extreme Moisture Management Made in USA with Comfort Toe and Reinforced Heel and Toe Area Machine was warm with like colors. Only non-chlorine bleach when needed. Tumble dry low. Do not iron. Do not dry clean. Do not use fabric softener or dryer sheets. USA