The Andersen Company No. 4403 Comfort Flow Anti-Fatigue Linkable Middle Mat is static-dissipative with a high density, closed cell nitrile rubber cushion that is made from 15% recycled content. This light-weight, 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 it. This mat is welding safe, chemical resistant, and grease & oil proof making it recommended for many kitchen and industrial applications. Unlike the original Comfort Flow Anti-Fatigue Mat, this style is linkable allowing the user to connect and remove pieces to fit into the work area. This piece is an middle piece, which has borders on two sides and links on the other two.