Air Step Antifatigue Mat, Polypropylene, 24 x 36, Black, Sold as 1 Each Anti-fatigue mat with foam structure and ribbed surface. Reduces worker fatigue and discomfort. 3/8"" vinyl construction ensures higher durability and better resilience than ordinary vinyl sponge mats. Support provided by its vinyl foam construction. Can easily be cut to any custom size with just a pair of scissors.