Chair Mat for Carpet- Low Pile, 46 by 60-Inch Rectangle, Clear Vinyl 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 low pile carpets like loop/berber up to 3/8" thick including padding For moderate office use Choose a higher pile chair mat if usage is over 8 hours or 200+ lbs. High quality, clear mat protects carpet from wear and tear made in the use