Gym Rubber is a high density closed-cell foam with a medium feel. Its durability and flexibility makes it great for exercise matting, kneeling cushions, and camping pads, all while remaining comfortably soft to the touch. It can help dampen vibrations and noise in automotive and industrial applications as well. Gym Rubber features a high R-Value, allowing it to be used as insulation. Very easy to cut, it is also moisture resistant and practical for outdoor, boating, and marine applications. Its technical name is Polyvinyl Chloride Nitrile Butadiene Rubber (PVC/NBR).