Cushion max anti-fatigue mats feature nitrile-blended foam designed to withstand grease, oil, and chemicals. Though similar in price to pvc foam anti-fatigue mats, cushion max mats typically last twice as long thanks to the durable nitrile rubber that aids in extending the performance life of the mat. features: comfortable – 5/8 nitrile-blended foam provides excellent anti-fatigue properties durable – diamond-pattern surface provides increased durability compared to ribbed surfaces which tend to peel and shave safe – beveled edges provide a safe transition from floor to mat; certified high-traction by the national floor safety institute nfsi. Grease and oil resistant; chemical resistant recommended for indoor use in commercial and industrial settings material : closed-cell nitrile/pvc-blended foam thickness : 5/8 inch 0.625 custom sizes are available in 2′ 24, 3′ 36, and 4′ 48 widths and whole foot lengths up to 45′ please note, mat sizes are approximate as rubber shrinks and expands in conjunction with temperature and time. Tolerable manufacturing size variance is 3-5% standards and testing: compression deflection:61.7% at 20 psi & 77.5% at 40 psi certified high-traction by the national floor safety institute nfsi esd rating of anti-static passes temperature astm d-1056 passes flammability standard doc-ff1-70 cleaning instructions: scrub with a deck brush as needed using a detergent with a neutral ph rinse with a hose or pressure washer hang to dry