New Balance LC3 Sock polyester 93% Polyester, 6% Nylon, 1% Spandex Lightning Dry Moisture Management with Breathable Sie Vent Panels Made in USA with Comfort Toe Seam and Reinforced Heel and Toe Abrasion 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