Champion Men's Jersey Tee (Set of 2) Jersey shirts closure Solids:100% cotton. Oxford Grey: 90% cotton/10% polyester. Granite Heather: 60% cotton/40% polyester 100% cotton jersey feels great won't weigh you down. (Grey and Heather are cotton-rich blends.) Set-in mini-ribbed crewneck keeps its shape wash after wash. Shoulder-to-shoulder taping helps prevent stretch-out and rip-out. Durable double stitching reinforces cuffs and hem.