This UPF 50 sun protection 1/4 zip top has all the performance you need for fishing in comfort, plus the latest style that you'll want to keep on when you've left the water. It has great features to keep you staying active; its first and greatest feature of 4 way stretch gives you the mobility when you need it most! Its second popular feature of moisture wicking is great for wicking away any access precipitation. The feature you won't even know is working while you are wearing it, is the Anti-microbial in the t-shirt that will keep away any unpleasant odors. Surely a winner for anyone active!