Sport-Tek Posi-UV Pro Long Sleeve Tee. ST420LSThese high-performance tees have a soft, matte hand and deliver exceptional UV protection, PosiCharge color-locking technology and moisture wicking., 4-ounce, 100% polyester interlock with PosiCharge technology, UPF rating of 50, Removable tag for comfort and relabeling, Set-in sleeves