Check the listing for details. Leatt Knee Brace X-Frame Size US Large Left Knee . Condition: New with tags. Listed at 245.00 USD. Leatt Knee Brace X-Frame Size US Large Left Knee. Leatt X-Frame Knee BracesThe Leatt X-Frame Knee Brace is made of lightweight but strong injected carbon composite material. Engineered to help reduce forces to the knee, the X-Frame limits knee injuries and is CE certified as both a medical device and as impact protection. Sporting asymmetrical hinges with a slim profile for improved contact with the bike. The outer hinge’s feature durable metal gears which offer a smooth and precise movement. A comfortable fit is achieved with an easy strapping system, interchangeable hinge padding sizes, and a low-profile shin bone pad that fits inside any MX boot.Features:Injected carbon composite frame constructionAsymmetrical hingesSlim inner hinge for superior bike feelMetal geared outer hinge for precise movement and durabilityReduction of forces to limit knee injuriesCertified as medical device: EU CA014741, USA FDA 10048761CE tested and certified as impact protection: Knee EN1621-1Hyper extension limitations 5º, 10º, 15º and 20º for ACL injury reductionFixed hyper flexion stoppers for meniscus injury reductionLow profile shin bone pad that fits inside most MX bootsComfortable and easy fitting strap systemCustomized fit with interchangeable hinge pad sizes