The Cho Pat patellar kneecap stabilizer applies constant pressure to the joint providing effective symptomatic relief of acute and chronic pain. The fabric covered neoprene support improves lateral and medial reinforcement for weak and arthritic knees. Four enclosed firm plastic tubes buttress the kneecap providing significant support while effectively limiting mobility to reduce patellar subluxation and degeneration and provide protection and promote healing. Measure around leg at mid kneecap.