you get what you pay for...i was looking at the standard 19.99 mech. creeper, but decided to pay the extra money for this product...glad i did, worth the extra money. you do have to install the wheels, takes about 15 min. great body contour, i did not give it 5 stars because it lacks a small padded headrest, the larger model has a headrest but that was too long of a creeper, and kind of expensive. should have been an accessary option for a small amount more.