EcoTex Evolutionmat, Recyclable Chair Mat, For Standard Pile Carpets (3/8" or Less), Rectangular with Lip, Size 48" x 51" (FRECO114851EP) Environmentally friendly chair mat made with recycled enhanced polymer (up to 50%). This chair mat protects your carpet from 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. Gripper back for use on Standard Pile carpets. Rectangular with lip to provide extra coverage under the desk. Size: 48" x 51"; mat size may vary slightly due to manufacturing process