Description This 1/4" thick pad has a needle-punched synthetic fiber construction that prevents decomposition and shredding, minimizes mildew and odors even if damp. Thermal-set ridges on the upper surface, in an exclusive pattern of chevrons, running in multiple directions, enable the pad to grip the rug more effectively and prevents lateral motion in any direction. Superior natural backing Royal Lavender formulation - not cheap vinyl or inexpensive synthetic rubber - exclusive hexagonal pattern, puts more real rubber in actual contact with any bare floor, no matter how slippery, and provides the highest degree of non-slip traction. Hypoallergenic, 100% synthetic, chemically inert padding contains no plant or animal fibers to decompose, outgas, or aggravate allergies. Protects any Oriental or other area rug laid over any hard floor - wood, tile, stone, brick, terrazzo, laminate, etc. - including highly waxed and polished surfaces. Note: Due to the changing nature of some vinyl floors, Payless Rugs advises checking with the flooring manufacturer as some vinyls react negatively to rubber.