This lond-sleeved REI button-up collared shirt is perfect for any occasion, whether it be for hiking, walking, traveling, workwear, or casual wear. Mesh pit vents and back vents. 2 chest pockets (velcro shut) and each sleeve has a button-closure bicep/shoulder pocket. 1" split side hem at bottom. Polyester, spandex: lightweight, stretchy, and perfectly packable. The shirt features a tan, beige, brown, olive, and gray plaid pattern, with a collared neckline and button closure. (Collar does not button.) Size Medium, with a chest size of 42 inches (stretches). Machine washable. Versatile design and comfortable features. Dries quickly. Comfy for any time but has all the features you need for an active lifestyle!