If the name doesn’t already give it away, let us help you. Duo means two. The DUO jacket is both a jacket and vest in one. It’s perfect for those transition seasons where you aren’t quite sure if you’ll need full arms or only a vest. Start out with full sleeves and simply unzip the arms when you’re warmed up. You can then store then in one of the three rear pockets- handy, huh? Our four way Ergo Stretch material provides a flattering fit for this unisex jacket and the reflective piping provides a little extra safety on those days you find yourself chasing daylight.