Omni-Shade™ UPF 40 guards against skin damage using tight fabric construction and modified fibers to block UVA/UVB rays, so you stay protected in the sun Omni-Wick™ keeps you dry and cool by pulling moisture to the fabric’s surface to evaporate, delivering fast-drying, next-to skin comfort in the heat Quick-drying treatment allows garments to dry faster by helping moisture escape from the surface of fabric, so you stay comfortable while being active Antimicrobial treatment helps control odor Mesh-lined vent at back for breathability Rod-holder loop on left chest helps free up hands when changing gear Buttons on collar secure it in the wind Button-up on center-front placket Multiple chest pockets help store gear