Thinner mat provides a great value while offering economical performance. Lightweight chair mat for occasional use on carpets up to 1\/4" thick. Easy-glide rolling surface provides effortless chair movement. Studded design secures mat from moving while protecting carpet from caster wear, spills and heavy traffic. Free and Clear non-orthophthalate, non-cadmium formula promotes a healthy work environment while offering exceptional clarity and durability. Classic straight edge finish.