This knee immobilizer features a universal design with contoured posterior stays and lateral/medial stay assemblies that are movable to provide the best positioning and immobilization. It has a 4" patella strap that's elastic to provide added compression and is available in an extra-wide width. Used for mild to severe knee injuries when the full extension of the leg is wanted or for post-op knee immobilization, this immobilizer is made of breathable foam laminate and soft loop pile that has hook and loop closure straps, aluminum stays, and high-quality elastic straps.