The net weight of this 42 in. creeper is only 11 lbs. 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. MichaelPro's 42 in. Creeper features a 350 lbs. capacity with a length of 42 in. and width of 22 in. it fits comfortably for most users. 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 in. each, 2 casters in 3 in. each and the remaining 2 in 1.5 in. each. Such sizes provide not only better maneuverability but also the extra durability. 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.