Outer material made of extremely durable Cordura. Cordura, an extremely abrasion-resistant textile fiber (four times more than regular nylon), makes this product a resilient choice for cross use. Gel lining for shock absorption. Protection provided by an ABS shell on the legs. Protection for the hind legs during cross use. Standard knee protectors are not sufficient in the cross area; the protection of the hind legs needs to be enhanced. You can combine them with the Cross Antérieur Gamêtres protectors, reference HPTX.