Innovative SuperGrip smooth bottom surface chair mat replaces sharp studs and sticky adhesives to hold mat firmly in place on carpet or hard floors.�Gently protects multiple flooring types from normal wear and tear, and damage caused by chair casters. Easy glide rolling surface improves chair mobility and helps reduce leg and back strain.�Recommended for use on low-pile carpets up to 0.38 thick, and hard floors.�Made from our Free and Clear® non-orthophthalate, non-cadmium formula that promotes a healthy work environment, while offering exceptional clarity and durability.