Outdoor Research Men's Wayward Sentinel L/S Shirt 86% Polyester/14% Elastane Imported Fabric performance: breathable, lightweight, Quick-Drying, wicking, movement-mirroring stretch, UPF 50+, insect shield Protection Design features: button chest pockets, zip Security chest pocket, logo placket label, contrast grosgrain in collar Functional details: curved hem, 4-hole logo button closures, air vent inner back yoke, sleeve roll up tabs