Flat shipped chair mat means no fuss, no wait! The HON Basyx Commercial-Grade 36" x 47" Polycarbonate Chair Mat with Lip for Low Pile Carpet can simply be pulled out of the box and used right away without the hassle of unrolling or stubborn curling. This mat has been durability tested to ensure no cracking, curling, caster indenting, or damage to the carpet. The crystal clear, stain-resistant polycarbonate material provides a completely transparent product that is also free from harmful and toxic chemicals. This phthalate-free, CAL 117 compliant mat helps keep your indoor environment healthy and it's 100% recyclable, so it helps keep our planet healthy too! The mat is for use on low pile carpeted areas, carpet with loops and fibers that are shorter than 1/4 inches, due to its 3mm cleats. The cleats also help to make the mat anti-slip, as well. The mat weighs 5.64 lb which adds to its sturdy, anti-slip properties. The rectangle shape mat covers a 36" x 47" surface area and is backed by the HON Basyx Limited 5-Year Warranty.