These tees stretch and move with you while you're swimming or during any water activity. Designed to combat UV rays and moisture, these high-performance tees also have PosiCharge technology to lock-in colors and logos. 5.9-ounce, 90/10 poly/spandex stretch jersey with PosiCharge technology UPF rating of 50 Trim, comfortable fit Tag-free label Raglan sleeves Underarm gussets