The Cortech Intermediate Hygiene Admission Mat is a 36" x 60" mat designed for intermediate hygiene control. It features a 100% nitrile rubber top surface with a waffle underside to trap dirt. The mat's raised nubs help remove dirt from shoes and wheels while allowing water, snow, and debris to fall through. It can be used indoors or outdoors in entryways or transition areas that need an intermediate level of contamination control. The mat is 3/8" thick and weighs approximately 18 lbs. It is made in the USA by Cortex, a company specializing in entrance matting.