Jaco USA Resurgence MMA Fight Shorts-White 32 Ultra-durable STR-X? fabric that stretches effortlessly in all directions and wicks perspiration rapidly This fabric was specifically developed to provide the technical needs that are essential in MMA: durability, exceptional 4-way stretch, breathability, moisture wicking and comfort Patent-pending compression waist-tightening system that can be tightened without creating scrunching or cinching around the waist while providing a comfortable, no-slip fit. This system provides a compression style fit internally to the garment that allows the external look of the product to remain unchanged Internal stretch pocket located at the bottom of the shorts leg opening so that you dont have to untie your shorts every time you want to stow your mouthguard. This compression style pocket is designed to hold the mouthguard (or locker key) so that it does not flop around while working out Fly backing panel construction to prevent rubbing and chafing from the flys hook and loop material