RDX Training UFC MMA Shorts Cage Fighting Grappling Martial Arts Muay Thai X15 RDX Patent Pending X crotch panel collection for greater range of motion The RDX MMA Shorts have 4-way Stretch fabric with Multiple Flex Panels for excellent mobility Military Grade stretch fabric for superior flexibility, Patent pending design Improved hook and loop closure strap system, Embroidered logo & T3 stitching Waistband with interlocking drawstring for best fitting