ES Robbins EverLife Anchor Bar Rectangle Vinyl Chair Mat for High Pile Carpet, 46 by 60-Inch, Clear Anchor bar chair mat cleat system holds securely, yet is gentle on carpet and fingers Green guard certified for low chemical emissions to ul 2818 Protects high pile carpets up to 1" thick including padding High performance chair mat engineered for intensive usage over 8 hours/200+ lbs. High quality, clear mat protects carpet from wear and tear made in the use