Specially cut to fit a woman's contours. Combination of lightweight 500 denier polyester mesh and 600 denier polyester for maximum ventilation with durability. Velcro side cinch strap system for custom waist size adjustment. Cowhide leather provides grip and heat protection in the knee. 4-way ribbed Spandex in the knee and rear yoke provide flexibility. YKK brand zipper. Designed to match the Women's GP Air Jersey.