The Orvis Open Air Caster is a favorite among the Wildrose trainers. Poly/nylon blend dries quickly and promotes evaporative cooling. Back is caped and lined with mesh. Front chest above pockets is also mesh vented. Concealed button-down collar eliminates wind flap. Roll-up sleeve tabs. UPF 30+ blocks 97% of harmful UV rays. Security zip behind wearer's left pocket. Chest pockets are flat with pleats.