The BedRug TrackMat is a knee and back saving foldable two foot by four foot utility mat made from a tough impact absorbing three quarter inch thick foam pad that is infused with one hundred percent polypropylene fibers. This material is similar to what is used in life jackets making it water, mold and mildew resistant. It will provide comfort and convenience as a kneeling pad or portable creeper. The TrackMat can withstand whatever you throw at it since it is also oil, chemical and stain resistant. It stores easily in your car trunk or behind your truck seat by folding in half to a two by two foot square. It is perfect for working in your garage, driveway, on the side of the road, at the track in the pits or in your trailer.