SPRAWL Gi-Flex Gi Pants | MMAGearGuide.net Sprawl yet again setting the standards for MMA Gear and Equipment. The Gi-Flex has all the best features we introduced to the MMA world in our shorts designs including: A real adjustable waistband system with a drawstring, fly and Velcro closures. Our Channel Lock inner waistband providing stability in the most demanding training and competition situations. A Flex Panel crotch to enhance performance and flexibility. Mesh lined legs keep the pants from sticking to you while sweating.