Outstanding anti-fatigue qualities for dry areas. Solid 20% recycled Nitrile Rubber top surface has excellent chemical and oil resistance. Closed cell Nitrile Rubber cushion provides long lasting comfort. Welding safe. Nitrile rubber surface is molded to the cushion backing (not glued) so the surface will not delaminate. Rubber surface remains flexible for the life of the product and will not curl or crack. Electrically conductive and certified slip resistant by the National Floor Safety Institute.