Built to perform and designed to be casual, the Cosmic Short Sleeve tee shirt is an everyday top that is ready for impromptu adventures. The ultralight blend of polyester and elastane feels great against the skin and stays light even when you sweat. Superlight, the fast wicking polyester fabric keeps you cool when you work up a sweat. Polyester fabric dries instantly in the sun, and very fast in any climate. Perfect for high output sports. Material: Polyester, Elastane.