Chairmat is ideal for medium-pile carpets. Sturdy, 2/15" thick material protects carpet from wear and tear caused by chair casters. Easy-glide rolling surface provides effortless mobility. Lightly textured top surface is slip-resistant and scuff-resistant. Studded bottom provides superior gripping power. Edge allows ease in carpet-to-mat transition. Free and Clear formula produces an exceptionally clear vinyl mat that is nonphthalate, noncadmium and BPA-free.