Data sheet: Materials: Mesh inner knee. exterior in high density polyester 600D fully elasticized. DETAILS: Innovative technology X-Flex (fully elasticized material). Cutting construction pre-curved for a better fit in the riding position. Made of 60 panels. zip and flap closure with plastic clips. Double adjustment on the sides with Velcro. reinforced material on the inside of the knee - Armortex Kevlar padding in the knees. rubber patch on the thigh area.