Speedo Men's UPF 50+ Keepin' On Short-Sleeve Rashguard 100% Polyester Jersey Loose fit rashguard styling for more comfortable, forgiving fit Core solid with contrast splicing and exclusive Vapor Plus water repellant fabric that dries twice as fast Easy care quick-drying polyfabric - perfect for beach to pool to gym UPF 50+ offers tighter knit fabric for higher level of sun protection Made by Speedo, the world's #1 swim brand