Water Hog MASTERPIECE Select mats combine beauty and durability. Their innovative woven design is engineered so it scrapes dirt and water off feet from all traffic angles and looks great as well. Our original design holds dirt and water beneath shoe level, preventing dirt and moisture from tracking onto floors. Like all other Water Hog products, MASTERPIECE Select is easy to maintain and clean. Certified high-traction by the National Floor Safety Institute. Exclusive rubber reinforced face nubs prevent pile from crushing in high traffic areas, maintaining high performance and extending product life. Premium 28ounce anti static polypropylene fiber system dries quickly and won't fade or rot. When wet, the rubber reinforced surface allows water to be wicked to the bottom of the mat, below foot traffic providing a slip resistant surface. Exclusive "water dam" border keeps dirt and water in the mat and off the floor, minimizing slip hazards and floor damage. Construction: tufted loop pile. Testing: Passes Flammability Standard DOC-FF-1-70. Electrical resistance -IBM (surface to ground) ASTM F -150 and NFPA 99 Chapter 12 Section 4. 1. 3. 8 (6) (7), 1990. Average electrical resistance at 70 degree and 50 percent relative humidity: 2. 3 x 1012 ohms. Passes AATCC test method 134-1991 electrostatic propensity of carpets. Maximum voltage positive 0. 2 KV.