EcoTex Revolutionmat Chair Mat for Hard Floors, 100% Recycled, Tinted Rectangular with Lip, 48" x 51" (FRECO4851LP) Safe for the environment: chair mat is made from 100% recycled PET - reclaimed from used plastic drinks bottles Protects your wooden, tiled or hard floor from scratches, dirt, wear and damage caused by chair casters Mat is designed for easy-glide movement for chair users - which can reduce leg fatigue 100% recyclable chair mat; PVC free; produced using up to 30% renewable energy from our factory's on-site wind turbine Smooth back for use on hard floors; rectangular with lip; 48" x 53" (lip size: 25" x 12"); mat size may vary slightly due to manufacturing process