Heavyweight Blend Crew made of 50% Cotton / 50% Polyester, 13.5 oz. Double needle collar, shoulders, and armholes. Double needle cuffs and banded bottom. Set-in sleeves. Quarter turned body. 1 X 1 athletic rib with Lycra®. Note: Sport Gray Heather and Antique Cherry Red are made of 10% Polyester; Safety Green/Orange/Pink are made of 50% Polyester.