Hinged knee brace with anterior opening for easy donning and doffing. Provides medial and lateral support for treating knee instability and degenerative joint disease. Heavy duty hinges with 45, 60, 75, 90 degree flexion and 0, 10, 20, 30, 40 degree extension stops included. Manufactured from premium grade latex-free neoprene. Measure mid patella circumference for sizing.