T-Shirt Fit: Your most comfortable go to lifestyle shirt with function Designed for athletes in and out of the water, Xcel's VentX top balances breathable, lightweight performance with excellent sun protection. Tested and UPF 30+ rated to block 94% of UVA/UVB radiation from the sun. 4-way stretch, fast drying, and moisture wicking. With a relaxed t-shirt fit, designed to give you just enough room for comfort and performance.