100% Polyester Button closure Machine wash cold and hang to dry UPF50+ Sun Protection: The UV protection shirt prevents you from sunburns and long-term skin damage by blocking harmful UVA and UVB, and delivers a relaxed fit for all-day comfort. Breathable & Quick Dry: Unique high-tech air vent fabric keeps the breeze flowing in and the heat flowing out and delivers excellent moisture-wicking and quick-dry abilities to help all-day cooling. Water-resistant & Wrinkle Free: The men’s shirt is made of water-resistant fabric and stain-repelling materials to keep you dry and clean for outdoor hiking, fishing, and other activities. Softer, stretchable, and wrinkle-free after washing. A good choice is travel clothing. Functional Design for Outdoor: These hiking shirts have 2 chest utility pockets with sunglasses loop and pen holder slot for convenient storage; A built-in glasses cleaning cloth at the hem allows you to clean glasses or shades on the go. Roll-Up Sleeve: The Long sleeve shirts feature buttons and tab holders at the arms to convert long sleeves to short sleeves for hotter days. 2 Buttons at the cuffs to adjust the cuff to your wrist.