Diamond plate anti-fatigue by rhino is the benchmark for comparison to all other industrial anti-fatigue mats. This strong performer suffers no deterioration from weathering and ozone exposure and is self-extinguishing when tested in accordance with FMVSS-302. These mats offer excellent durability following exposure to many organic and inorganic industrial chemicals. Rhino’s diamond plate anti-fatigue far exceeds the competition with it’s closed cell polymeric sponge base that produces the incredibly soft and resilient rebound properties needed in a rigorous manufacturing environment. 3 year warranty.