M+A Matting 371 Cushion Station Nitrile Rubber Anti-Fatigue Indoor Floor Mat with Holes, 3.2' Length x 2' Width, 7/16" Thick, Black Anti-microbial treated for lifetime protection against odors and degradation Highly durable and dense closed cell nitrile rubber foam combined with uniquely designed construction affords excellent anti-fatigue properties Grease and oil proof Designed for use in wet or dry areas Safe to use at welding stations