Cleartex MegaMat chair mats provide the ultimate protection for hard floors or carpets. Designed for high-use or heavy-load workstations, the incredibly tough polycarbonate used to make this mat has been tested for loads up to 500lb. It will not crack, dent, discolor or curl. It has an easy-glide surface, designed for its ergonomic benefits to the user. Size: 35" x 47"