The Prana Orion Short Sleeve T-Shirt is ideal for causal wearing. Made from 100% polyester, this top is light in weight and quick-drying. It wicks moisture, so you stay comfortable all day long. A closed hole melange mesh fabrication allows air to flow for breathability. The flat-lock seams of this top are chafe-resistant to keep scratches at bay. This top is rated UPF 40+ for protection from the sun.