Sport-Tek Youth Long Sleeve Rashguard Tee. YST470LSThese 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