Soft knit fabric with mesh for ventilation that adapts to where you need it most. The near-seamless construction eliminates chafing. 4-Way Stretch technology allows free movement in every direction. The material wicks away sweat and dries very quickly. Zipper for better ventilation and easy dressing and undressing. Edging of armholes. To create a worn look, we used a special dyeing process, so no two pieces are exactly the same. Odor control technology minimizes odor.