The men's Base Layer Long Sleeve Top by Fila is just the right top to keep you comfortable in all training conditions. The contrast color mesh panels along the sleeves help this top breathe and look great. If you're wearing it at night, the vertical bar on the back neck is in a reflective silver to help make you visible. Fila's technologies make this fabric stretching, wicking, and breathable so it moves with your body and takes moisture away from your body to keep you dry. The exclusive silver reflective heat transfer Fila speed logo appears on the collar with the embossed Fila logo necktape. Material: Polyester, Spandex.