Flex Joints - Stretch mesh knees and upper legs for longer, more powerful strides.Ventilated Legs - Inner mesh leg gussets keep you cool during the game.Hip-Hugging Side Straps - Easy waist adjustment for a comfortable, personalized fitHIGHLIGHTS.Ventilated legs with inner mesh help keep you cool during the game.Hip-hugging side straps with easy adjustment for a quick and comfortable fit.Great for intermediate to advanced levels of play.