Constructed of durable open cell foam with moveable medial/lateral stay casings for proper positioning. Available with contoured or straight posterior stays. Immobilizer can be trimmed for custom fit. 4" elastic patella strap for compressive support. Straight stay version features popliteal pad. Ideal for post-operative immobilization; grade 1 and grade 2 collateral ligament sprain; patellar subluxations.