The X-Frame Knee Brace is made from Injected Carbon Composite & is the latest innovation in the Leatt knee brace range. Engineered to help reduce forces to the knee, it limits knee injuries & is certified as both a medical device & as impact protection. Sporting asymmetrical hinges, the inner hinge is 40% slimmer, providing superior bike feel during riding, whereas the outer hinge’s durable metal gears offer precise movement. The X-Frame provides a comfortable fit with an easy strapping system, interchangeable hinge padding sizes, & a low-profile shin bone pad that fits inside all boots. Features Injected Carbon Composite Frame Asymmetrical Hinges 40% slimmer inner hinge for superior bike feel Metal geared outer hinge for precise movement & durability Reduction of forces to limit knee injuries: ACL, Meniscus & MCL Certified as medical device: EU CA014741, USA FDA 10048761 Tested & certified as impact protection Knee EN1621-1 Hyper extension limitations 5º, 10º, 15º & 20º for ACL injury reduction Fixed hyper flexion stoppers for meniscus injury reduction Low profile shin bone pad that fits inside all boots Comfortable & easy fitting strap system Customized fit with interchangeable hinge padding sizes Delivery in pairs