The all new X-Frame Hybrid Knee Brace is manufactured from Injected Carbon Composite & has a 40% slimmer hinge on the inside to provide superior bike feel, the outer hinge has metal gears for durable & precise movement. Leatt uses a separate sleeve with a certified impact protector built in to reduce the bulk in the knee area allowing freer movement when wearing race pants. A numbered strapping system for ease & different sized hinge pads are included with a low-profile shin plate all ensure the fit is perfect for you & above all comfortable. The X-Frame Hybrid Knee Brace is made from Injected Carbon Composite & is the top-level cage-type knee brace in Laett s range. Engineered to help reduce injuries (ACL, Meniscus, & MCL), it is certified as a medical device & as impact protection. Features Injected carbon composite frame Asymmetrical joints 40% slimmer inner hinge for superior bike feel Metal outer hinge for precise movement & long lasting durability Stocking with Airflex Impact Gel knee protector with hard shell knee cap for ultimate comfort Reduction of forces to limit knee injuries: ACL, meniscus & MCL Certified as a medical device: EU CA014741 Tested according to: Knee EN1621-1 Lockout settings of 5, 10, 15 & 20 degrees to reduce ACL injuries Fixed Hyperflex setting to reduce meniscus injuries Low-profile shin pad that fits all boots Comfortable & easy to use strap system Adjustable fit with replaceable joint pads Delivery in pairs