ExOfficio Men's Air Strip Lite Long Sleeve Shirt High-speed drying time and increased breathability with the added benefits of an Airomesh Plus(TM) lined cape vent and Air Strip ventilation system Adjustable 3-position sun collar and 30+ UPF for excellent UV protection Pleated bellows pockets with a hidden security zip pocket for your convenience and peace of mind Handy roll-up sleeve tabs; utility tab is for keeping your rod steady while tying off a fly Soft, moisture wicking finish, plus wrinkle resistance for comfort