Four backrest positions let this creeper switch from flat to propped without leaving the floor: a bottom latch releases, the frame clicks, and you are back under the bumper. The 40 by 17 inch deck sits 4 to 10 inches off concrete, low enough for most sedans, and the padding stacks PVC leather over EPE foam, sponge and MDF so hips and shoulders are not resting on bare tube. Seat area measures 27 by 12 inches, the backrest 12.5 by 12 inches, and the headrest 12 by 6.5 inches. Six swivel casters spread the load and turn in place on rough garage floors. The metal frame is coated against deformation and holds 250 pounds, while the creeper itself weighs 12 pounds, light enough to hang on a wall hook when the job is done.