Crystal-clear mat with a lip is designed to preserve and protect your low-pile carpet up to 1/4" thick (including padding). Exclusive, AnchorBar chairmat cleat system provides easy handling, long-lasting durability and a clean, modern look. Chairmat cleats hold mat firmly in place yet are gentle on carpet and fingers. Engineered for optimum clarity, high performance and a smooth effortless roll, thick vinyl mat with a straight edge is designed for heavy use to protect against wear and tear from chair casters. Mat offers a thickness of 98 mil. Lip measures 20" x 10".