Performance doesnt procrastinate. Thats why now is the time to get out in the Marmot Mens Accelerate Short Sleeve Tee. This shirt is ideal for training days with its perforated AirExchange fabric that is quick to dry and wick moisture, Raglan sleeves for moving comfort, and a droptail hem. Fabric is 100% polyester jersey heather 4.4 ozyd. AirExchange performance fabric. Ultraviolet Protection Factor UPF 30. Quick drying and wicking. Flat locked seams for added comfort. Drop tail hem for increased coverage. Raglan sleeve for comfort and increased range of motion. Crew neck. Reflectivity Semi fitted. Avg. wt. 4.8 oz. 136.1g.