Medically Certified Junior Knee Brace With Impact Protection. Three-point force distribution with super stiff forged C-arm mono hinge construction. Reduction of forces to limit knee injuries: ACL. Meniscus. MCL. Certified as medical device: EU CA014741. USA FDA 10048761. Hyperextension limitations 10, 15, 20 and 25° or ACL injury reduction. Hyperflexion limitation. Fixed hyperflexion stopper for meniscus injury reduction. Engineered lab tested built-in fracture points: The C-Frame chassis brakes before the threshold for injuring: The shin bone (Tibia). The thigh bone (Femur). Very low profile inner knee for superior bike feel. Comfortable, low profile shin bone plate with load distribution pad that fits inside all boots.