Ergomat Infinity Deluxe ESD Cleanroom Anti-fatigue Mats. The Infinity Deluxe is the ultimate flat surface ergonomic mat. This 5/8” thick resilient polyurethane mat is engineered to provide both cushion and rebound to deliver exceptional ergonomic relief without hindering the movement of pivoting workers. It offers the additional advantages of easy clean-ability and broad resistance to incidental chemical and liquid spills due to its closed-cell, non-porous surface.