Wonder-Pro is Crown's classic plush olefin mat. It helps protect floors with a vinyl backing moisture barrier. As a wiper, Wonder-Pro plays a major role in the retention of water and fine dust so fewer contaminants enter the building. Retains 60% more liquid and fine dirt than most standard mats. Resist fading, staining, mold and mildew. For interior areas with medium traffic. Indoor/Outdoor: Indoor; Compatible Surface: Hard Floors; Grade: Medium Duty; Mat Shape: Rectangular.