【LIGHTWEIGHT】The net weight of this 42-inch creeper is only 11 pounds. It is a one piece blow molded creeper constructed out of HDPE plastic, which is light weight but strong. With it being impact resistant, it gives users extra comfort while lying on it. 【GREATER WEIGHT CAPACITY】MichaelPro's 42-inch Creeper features a 350 lbs capacity with a length of 42 inches and width of 22 inches, it fits comfortably for most users. 【SWIVEL CASTERS】This plastic creeper features 6 multi-terrain swivel casters that are of industrial strength with oil, chemical, and grease resistance. 2 casters come in 4 inches each, 2 casters in 3 inches each and the remaining 2 in 1.5 inches each. Such sizes provide not only better maneuverability but also the extra durability. 【ERGONOMICALLY DESIGN】 The creeper has a rugged ergonomic design with impact resistance to provide the extra comfort for users. Just sit slowly on the end of the creeper, and lay back to rest your head on the ergonomically designed headrest. 【WARRANTY】 The MichaelPro's Mechanic Creeper is covered with a one year limited warranty from the date of purchase. Simply contact us if you need assistance!