New Balance Men's Extra Wide Crew Fits Up to 6E 2-Pack Sock 80% Acrylic, 11 Polyester, 7% Nylon, 2% Lycra spandex Lycra Spandex for stretch and superior rebound Comfort toe seam for invisible feel Machine wash warm with like colors non-chlorine bleach when needed tumble dry low do not iron do not dry clean Imported