Was looking for something that would be the equivalent of an indoor door mat. Found ExactMats but was concerned that even their thickest material which is still very thin would not be strong enough. Then I read where people make mats for under their exercise equipment so that was enough of an endorsement for us. I ordered a 29” x 17” clear, frosted mat to fit in the threshold between our master bedroom and our breakfast nook. We had some minor carpet damage to mask and also keep it from getting worse. The custom size ExactMat worked perfectly! It is thin and flexible but strong! Very pleased with the results!