Polyester Blend Made from original Floortex polycarbonate. Our premium plastic mats are incredibly tough and durable with twice the impact strength of vinyl to provide a perfectly flat and rigid ergonomic easy glide roll surface. Material is used in aircraft windscreens and bulletproof glass Rectangular office chair mat protects your carpeted floors from damage and general wear caused by casters on rolling chairs Our clear Polycarbonate floor protector will not crack, sink, curl, cup, discolor or smell under normal use and correct application. The high clarity allows flooring to show through for an attractive and highly effective addition to your office or home environment Lies instantly flat from delivery for effective and immediate use. No need to wait for the mat to flatten. Compatible with under floor heating systems Eco-friendly manufacturing with 50% of our manufacturing site’s energy coming from on-site and external renewable sources. 100% recyclable. Free from Phthalates, tin, lead and cadmium. Child and pet safe. GreenGuard certified Please note, due to the manufacturing process this product has a +/- 5% size tolerance. All measurements are rounded to the nearest inch Gripper back for use on low to medium pile carpets (up to 1/2"). Not suitable for hard floor applications. Product Size - Rectangular 48” x 53" Limited Lifetime Warranty