Description 5.1 oz./yd², 100% cotton, 20 singles; Athletic Heather is 90% cotton, 10% polyester; Charcoal Heather is 50% cotton, 50% polyester;Set-in rib collar with shoulder-to-shoulder taping; Double-needle sleeve and bottom hem; Preshrunk to minimize shrinkage; CPSIA compliant; Tear away label;