Open-cell foam material is breathable and open popliteal area prevents binding. Back of straps have non-slip silicone strips to prevent splint migration. Lightweight composite lateral supports protect knee from medial and lateral forces, and hinges have stops to prevent knee hyperextension. At less than 13 oz., it is a perfect splint for use in post-surgery, mild ligament injury, knee instability or degenerative joint disease cases.