Grade 2 Neoprene rubber sheet, Black 50" x 80" x 0.5 mm approximately, these sheets are brand new but may have some imperfections, such as permanent creases and wrinkles, dirt spots, cuts and tears or may be short. these are the options available, write the option you like on the comments section: Royal Blue/Sky blue backing (3-sheets) Dark Gray/Red Backing these sheets are sold at a discount and are not returnable