Crown Matting Technologies Mat-A-Dor is one of our most durable heavy-traffic scraper mats. The mat is made up of an SBR Rubber that is naturally resistant to common acids, alkalis, and salt --- reducing the degradation of the mat. The mat is so durable that it remains flexible even in cold temperatures or climates. Mat-A-Dor's top surface is fingertips which form the scraping ability of the mat, in fact, it contains 50% more fingers than standard fingertip mats, increasing the efficiency of its scraping ability.