Universal Knee Immobilizer comfortably fits most legs with adjustable stays and straps. The movable stay/strap assembly facilitates correct medial and lateral positioning. 3/8" thick laminated foam with alternating hook-and-loop closures. Dual aluminum stays on the lateral and medial stay/strap assemblies. Three anatomically formed posterior stays. An elastic strap adds support to patellar area. Fits left or right.