Hanes 90/10 Cotton/Poly 10 oz Ultimate Crew Sweatshirt in Black - XX-Large shirts closure Spandex-reinforced neck, cuffs and waistband Coverseamed neck, armholes and waistband Fiber Content: "Fabric: 90% Cotton/10% Polyester 10 oz. except for Light Steel which is 85% Cotton/15% Polyester, and Charcoal Heather which is 65% Cotton/35% Polyester."