This running top is made with a nearly seamless construction and mesh ventilation for lightweight, breathable comfort over any distance. Long sleeves. Dri-FIT fabric helps keep you dry and comfortable. Nearly seamless construction for enhanced comfort. Knit-in mesh fabric for breathability. Stretch fabric and ergonomic seams let you run naturally. Thumbholes help the top stay in place as you run. Slim fit. Runs true to size.