The Marmot Men's Aerobora SS Shirt is a travel shirt for warm weather. Head off to warmer climates and enjoy AirExchange Performance fabric all day long. It offers UPF 25 sun protection, plus a whole lot of air permeability. Hike, explore the town or pack a couple in your luggage. Features of the Marmot Men's Aerobora Short Sleeve Shirt Air exchange Performance fabric for air permeability Packable, breathable, and lightweight Ultraviolet protection factor (UPF) 25 Stretch for increased mobility Polyester for quick-drying and wicking Durable flat-felled seams Shirt tail hem and single patch pocket Fabric Details 100% Polyester plain weave stretch 3.4 oz/yd