Rugged and eminently presentable, Boulder Plaid is lighter than similar shirts. It also has a heathered effect with a smooth texture that will make it feel like an old favorite from the very beginning. 51% nylon, 49% polyester. Men's lightweight wrinkle-resistant shirt, contemporary fit with UPF 50+, dual flapped chest pockets with button closures, roll-up sleeve tabs, straight hem with side vents. Material: Nylon, polyester.