Super stiff, mono-hinge frame with three-point force distribution; Very low-profile inner knee for superior bike feel; Reduction of forces to limit knee injuries: ACL, Meniscus and MCL; Certified as medical device: EU CA014741, USA FDA 10048761; CE tested and certified as impact protection: Knee EN1621-1; Hyper extension limitations 10, 15, 20 and 25 degrees for ACL injury reduction; Fixed hyper flexion stoppers for meniscus injury reduction; Engineered, lab tested built-in fracture points; Comfortable, low-profile shin bone plate with load distribution pad that fits inside all boots; Knee Brace Sleeves included