Half Zip Mock Neck Active JumpsuitPerformance Meets Style In One Piece The Half Zip Mock Neck Active Jumpsuit is a sleek, performance ready one piece that takes your activewear game to the next level. The mock neck collar adds a polished, elevated detail that sets this jumpsuit apart from the ordinary, while the half zip front makes it easy to layer, ventilate, and style on the go. Designed for movement, the highly stretchy nylon elastane fabric moves with your body and snaps back