Transparent polyvinyl chloride (PVC) mat protects floors and carpets from wheel damage. Transparent color allows the carpeting to show through and the textured surface is scuff resistant. The stud design grips carpet but wont harm carpet. Mat is non-toxic and recyclable. Edges are beveled for easy roll on and off. Corners are rounded. For use on low to medium pile carpet. Overall dimensions include lip. Thickness is .145".