Built from the Dry-Balance™ fabric a cotton/polyester blend that has the look and feel of cotton but the performance of polyester the Prana Nitro Pullover for Men wicks away moisture and keeps the chill away on the shoulder season days when you need more than a t-shirt but not quite a jacket. Contrast stitching logo on back and added embroidery makes the Nitro Pullover a little more than just another layer.