There are performance polos and then there are polos that perform. Our Featherweight collection is made in our lightest weight jersey fabric that is 60 GSM lighter than standard jersey (trust us, that's a lot) and wicks away sweat, regulates heat offers UPF 50 sun protection for those days where the sun is at its strongest. johnnie-O Featherweight Performance Polo Shirt - Mojave in Blue Size: Large.