These KimuraWear MMA competition shorts are constructed with ultra light breathable rip stop polyester material with triple stitching and reinforced seams throughout the entire short. They have an added layer of stretch flex panels in the inseam of each leg and across the outside of each leg giving you three stretch flex panels for added bonus range of motion when sprawling, shooting or kicking and split seam kick on each thigh for increased mobility when kicking or kneeing. Also, an adjustable Velcro waistband design with internal hook. Sizes indicated refer to waist band in inches.