The Andersen Company No. 4200 Comfort Flow Anti-Fatigue Mat is static-dissipative with a high density, closed cell nitrile rubber cushion that is made from 15% recycled content. This light-weight and flexible mat has beveled edges for safe transitioning from mat to floor and a lifetime anti-microbial treatment to prevent odors and degradation of the mat. The Comfort Flow anti-fatigue mat is certified slip-resistant by the National Floor Safety Institute and features drainage holes that allow liquids to flow through the mat. This mat is welding safe, chemical resistant, and grease & oil proof making it recommended for many kitchen and industrial applications.