This mat is the heaviest duty Ring Mat in our inventory. Its natural rubber compound construction has superlative anti-fatigue properties, as well as long-wearing, rugged durability. These mats, with their straight edges, can easily be placed, one next to the other in building block fashion, to create a continuous working surface for any dry, wet, slippery, or greasy work environment. The Ring Mat’s unique construction has an elevated underside which allows for excellent draining, air flow, and anti-fatigue padding, all at the same time.