Jaco Philippines Resurgence Fight Shorts - Black/30 Ultra-durable STR-X fabric 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 Internal stretch pocket located at the bottom of the short allows for easy access to your mouthguard without having to untie the shorts Fly backing panel construction to prevent rubbing and chafing from the flys hook and loop material 90% Polyester, 10% Spandex