New Balance Pro Lo LC3 Sock nylon 64% Olefin, 18% Polyester, 10% Nylon, 8% Spandex Lightning Dry Moisture Management Ultra-thin liner with Polypropylene wicking 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. China