The C-Frame Hybrid is a medically certified knee brace, complete with a Hybrid ReaFlex impact gel knee cup. The carbon chassis construction is super stiff for maximum control, and the three-point force distribution greatly reduces forces to limit knee injuries. The C-Frame chassis is designed with built-in fracture points that break before you injure your shin or thigh bone. The inner knee provides superior bike feel, and the comfortable, low-profile shin bone plate fits perfectly inside your riding boots. To accommodate race pants, the separate sleeve allows for freer movement.