The lightweight and comfortable second layer offers an athletic fit, extended sleeves with thumb loops and reflective accessories. The higher collar protects your neck from the cold and chafing from the backpack/vest straps, the zipper is finished to the garage, and the raglan cut allows unrestricted hand movement. You can expect great breathability, quick-drying material, thermal comfort equivalent to a running second layer. 87% Polyester, 13% Spandex Weight: 220g men's, 182g women's