- Supports and cushions the knee joint minimizing strain while in a crouched position. Injuries can be prevented. Painful knee sufferers can continue to play more comfortably. - The lightweight contoured foam pads were designed by a physician and former sports medicine trainer. - Withstands repeated compression. The Knee Saver has a base layer of firm yet resilient closed-cell foam. For comfortable cushioning the top layer is open-cell polyfoam. Covered with durable black nylon. - The Knee Saver for Shin Guards is held to the calf by the catcher's two lower shin guards which attach through four D-rings on the Knee Saver.