Our Coin Rubber Mats are made of natural rubber and provide years of trouble-free service. This is not a cheap rubber; it is a new anti-slip ribbed surface top, non-porous, non-absorbent, urine-proof, top-quality natural rubber. It is easy to clean and disinfect. Non-porous, non-absorbent, urine-proof, will not swell, curl or lift. Dust, spore, smell & allergy-free for humans and animals. Offers insulation from cold and is slip-resistant when wet. Tough and long-lasting.