Nylon porthole mesh body (except white is polyester). Double-ply nylon tricot mesh yoke with 7" elastic hemmed sleeves.Porthole mesh delivers a breathable feel so you can stay ventilated in between drills during camp. The double-ply polyester knit yoke adds durability as hemmed body and sleeve ends keep your shoulder pads snug during rugged play. Enjoy the most comfortable fit on the field thanks to the belt length design and polyester fabric.