Ergomat Infinity Bubble is the only true ergonomic mat available with up to a lifetime warranty (in dry applications). The Infinity Bubble mat has the comfort of a Polyurethane mat and has the added benefit of easy clean-ability due to it™s closed-cell/non-porous top surface. Ergomat Infinity Bubble also has extremely good chemical and UV resistance (except for organic solvents). Cleanroom ISO Class 5 (Class 100). – 12 Year Warranty