Rated UPF50 to help combat harmful UV rays this tee also performs with Dry Zone moisture-wicking technology to keep you cool dry and comfortable. 3.8-ounce 100% polyester Removable tag for comfort and relabeling UPF rating of 50 Self-fabric binding at scoop neckline and armholesDue to the nature of 100% polyester performance fabrics special care must be taken throughout the printing process.