When we can't put on another layer of sunscreen or clothing, we pull on the Swelter Shelter. Made of Nimblene™, our flyweight blend of quick-dry poly and spandex, the Swelter packs up small and light and shakes out wrinkle-free for sun protection. Mesh-backed, lasercut detail. Secure pocket. Back zip entry. 36" long on size M. UPF 50. Only @ T9. 2, 4, 6, 8, 10, 12, 14.