SANITOP® Anti-Fatigue Mats are made from a resilient rubber compound that features a large-hole / small-hole drainage system for almost immediate drainage. These mats are available in 2 versions: (1) Black mat which is grease-resistant and carries a 1-year warranty. (2) Red mat with extra nitrile content is grease-proof. These mats are great for use in restaurant kitchens, food processing plus industrial applications that need great drainage and grease resistance.