Troy Lee Designs GP Air Factory Pants Exacting in its execution, the Troy Lee Designs GP Air Factory pant displays clean patterns and a focused summertime fit. From an abundance of mesh to the flexible fit, the finished package leaves nothing to chance on the motocross track. New and improved construction with an athletic fit Combo 500 denier polyester mesh and 600 denier polyester for maximum ventilation with durability Velcro side cinch strap system can be adjusted within 2" of tolerance on waist size Cowhide leather in knees for maximum durability, added grip and heat protection 2-way spandex knee in calf, crotch and rear yoke provide added flexibility YKK brand zipper