The 590 Master Flex™ D23 modular rubber mat tile has an open octagonal construction with large drainage holes and a thickness of 1 inch. The Master Flex™ D23 system offers all the benefits of a matting tile that is easily installed, rearranged or replaced. What makes it revolutionary is the interlocking system that creates a durable and completely seamless connection that can be effortlessly installed. The 20 in x 20 in tiles cover sizeable areas easily and can be assembled on-site for installation in recessed frames in large entrances. Made from a durable natural rubber compound that is inherently resilient, anti-slip and withstands the heaviest foot traffic. The mat has excellent adherence and adapts to any surface while the raised studs underneath allow water to easily drain through, keeping the surface clean and dry.