Aquasorb Select Mats • Rugged construction combines extra heavy weight fabric with durable rubber backing • Unique rubber reinforced face ribs prevent pile from crushing, extending mat life • 100% polypropylene fiber has superior stain resistance, excellent durability, and colorfastness • Special cleated rubber backing keeps mat in place, prevents crawling on most carpets, and provides    excellent grip on hard surfaces • Mat holds up to 1 1/2 gallons of water per square yard • The overall mat thickness is 3/8" • Cleated backing "Grabs the Floor" Minimizes Creeping • Rubber backing is made from 15% recycled rubber tires