Medium-weight chairmat protects carpet from daily wear and tear with the highest quality vinyl mat. Ideal for most medium-pile carpets with up to 3/4" thickness. Unique notched-stud design grips carpet without piercing or damaging carpet backing. Beveled edge allows smooth chair movement. Free and Clear formula produces an exceptionally clear mat that is nonphthalate, noncadmium, BPA-free and lead-free.