The ORIGINAL Polycarbonate Chair Mat provides the ultimate in quality, clarity and durability for home and office flooring. High clarity polycarbonate allows the beauty of the floor to shine through and is the perfect gliding surface for chairs with casters. The rigid construction provides a perfect ergonomic easy glide surface for chairs with casters. Polycarbonate is extremely durable and does not curl, crack, dimple, discolor or smell under normal use. Manufactured using up to 30% renewable energy. 100% recyclable.