A tee for that tough and tiring training day, the Marmot Mens Cyclone Short Sleeve Shirt features lightweight jersey knit with Marmots AirExchange, an air permeable material specifically engineered to ramp up airflow, keeping you cool and collected. Mesh panels assist this tees hyper breathability while NanoWick technology allows this shirt to quickly dry after a workout. Woven for maximum sun protection, the flat locked seams and tag free neckline increase moving comfort. Fabrics are 100% polyester jersey 4.0 oz.yd and 100% polyester mesh 3.0 oz.yd. Lightweight, breathable, quick drying performance knit fabric. Ultraviolet Protection Factor UPF 50. Quick drying and wicking. Mesh panel for breathability. Flat locked seams for added comfort. Tag free neckline. Reflectivity. Semi fitted. Avg. wt. 4.8 oz. 136.1g.