2xu g2 long distance singlet mens this 2xu g2 long distance singlet has a host of design features including zoned panelling for unparallel climate control and aerodynamics flat lock stitching for stretch and smoothness against the skin front semi lock zip three rear pockets for storage and body cooling fabric to draw heat from the body and block infrared rays the top is a lightweight construction with a sleeveless design mens running vest sleeveless quarter zip front flat