The RCJ Machado/Gameness Black and White Classic Board Shorts are made with a four way stretch fabric and have a side slit to provide maximum range of motion. The advanced fabric moves with you when training and wicks away moisture. The shorts include a hook and loop waist closure and a drawstring. Available in even waist sizes 28 to 40. These shorts are the perfect complement to the RCJ Machado Progression Rash Guard.