COMPLETE COMFORT II Anti-Fatigue Indoor/Outdoor Mat is grease and oil proof, chemical resistant, welding safe and static dissipative. The beveled edges for safe transition from mat to floor. It's made from a high density closed cell nitrile rubber cushion which has 15 -percent recycled content. The floor mat has lifetime anti-microbial treatment to prevent odors and degradation. Recommended for wet and dry environments. Black. Manufactured by M + A Mats, formerly known as Andersen Mat.