The Mountain Hardwear Butter-Man 1/2 Zip is a soft and stretchy sport top that act as an amazing wicking layer on its own or under other layers. There is a deep front zip which makes taking it on and off a breeze, as well as making it convenient for cooling off. There is an arm-band zip pocket with cord exit, a rear zip pocket, and hidden glove construction at the cuff. When running you will be more visible because of the reflective patches.