The lightweight Men's Cooper Canyon Short-Sleeve Shirt is very comfortable, breathable, quick drying and looks stylish. Perfect for a day of hiking, or a night by the campfire. 56% Polyester, 44% Nylon plain weave 3.2 ozyd. Packable, breathable, lightweight, and quick-drying. Ultraviolet protection factor (UPF) 30. Nylon for durability. Polyester for quick-drying and wicking. Durable flat-felled seams. Button down collar. Single chest pocket with button closure. Shirt tail hem. Machine wash. Imported.