Cleartex MegaMat, Heavy Duty Chair Mat, for Hard Floors or Carpets, Size 46" x 60" (FCM121525ER) Heavy-duty chair mat tested up to 500lbs - perfect for 24 hour offices, or for big and tall users. Made from original Floortex polycarbonate, an incredibly tough material, also used in the manufacture of aircraft windows and bulletproof glass. The durable MegaMat chair mat will not crack, curl, dimple, discolor or smell under normal use. Chair wheels will not sink into a polycarbonate mat under normal use. Greenguard indoor air quality certified. Free from phthalates, PVC, tin, lead and cadmium. Child and pet safe. Unbeatable protection for your carpets or hard flooring from damage and wear caused by chairs. For use on hard floors and all carpets. Size: 46" x 60"; mat size may vary slightly due to manufacturing process