Bathmats made from a natural porous clay formed from fossilised plant matter known as diatomaceous earth. The bathmats weigh 1.8 kilos, can deal with weight up to 130 kilos. The minimum requirement is a flat floor surface. The take care is easy, clean it with sandpaper. The mat absorbs water that then evaporates. It will last a minimum of 2 years and should go on for 3 even 4. Leap into the future with this revolutionary product that is eco-friendly.