Lightweight and packable long-sleeved functional top in recycled polyester with side panels and back in mesh for extra ventilation where it is most needed. Comfortable as a base layer for strenuous activities as it wicks away moisture from the skin and dries fast. It can also be used as a light mid layer in warm conditions. Features: Well-fitting cut and semi-high collar with zipper that makes it easy to open up for ventilation, zippered chest pocket for small items, comfortable flatlock seams that reduce the risk of chafing. Material: Recycled Polyester.