Rhino Mats HDT-2436RNS Heavy Duty Top Anti-Fatigue Mat with Rhi-No-Slip, 2' Width x 3' Length x 1/2" Thickness, Black The top surface of HDT anti fatigue matting is made from the same exceptionally durable compound as our diamond plate floor mat product except it's 3/16-inches thick with a smooth surface This puncture proof surface material combined with our closed cell polymeric sponge base creates a mat to withstand the most rigorous commercial environments HDT floor matting offers excellent durability and long life, suffers no detraction from weathering, ozone exposure and is self-extinguishing when tested in accordance with FMVSS-302 The deluxe version is 5/8-inches thick 5 year warranty