It is a multi-purpose material that can be used as a rubber material.
For example, if you use it for anti-vibration protection such as apartment flooring, place a thin sheet underneath and place rubber sheet on top of it, then lay it on top of it and use it as an easy soundproofing or dampening floor.
For flooring etc., the color of the rubber transfers to the floor, so please place a paper sheet underneath and line up the rubber sheet.
Also, natural rubber will deteriorate when exposed to UV rays, so please use it indoors as well.