It's a Donjoy fully customizable knee brace for post-op acl recovery. It is fully customizable and the straps were never shortened. The height is currently set to the smallest setting but it can go way longer if needed. Locking hinge is currently set to -10 but goes up to 90 degrees. Only used it a few weeks post op and we are done with it so someone else can save themselves some cash. Bought it new for $285, asking $200 obo, no holds, first come first serve. Smoke free cat friendly home. Pick up only.