Poly propylene is a thermo static polymer, its used in the production of items that requires flexibility and toughness, Polypropylene mat flexible high durability, and elegance, more resistance to fatigue than any other mats. They resist most chemicals and are excellent weather proof mars which can withstand wear from mildew, rot and weather easy to clean and washable. Poly propylene top and rubber/pvc backing Entrance mat for Home and Commercial Establishments.