I used one time but I'm a tall guy. It's too short for me. This is 36 things I need 40 at least. 
36 In 2 -in-1 Foldable Adjustable Garage Shop Chair Black Rolling Z Creeper
330lbs 2-in-1 Foldable Mechanic Z Creeper Seat Rolling Chair Garage Work Stool
48" 2-in-1 Foldable Z-Creeper Automotive Garage Mechanic Rolling Seat Sky Blue
330lbs 2-in-1 Foldable Mechanic Z Creeper Seat Rolling Chair Garage Sky Blue
DNA Motoring 36" 2 in 1 Foldable Rolling Mechanic Creeper Seat Work Stool Red
40" 2-in-1 Foldable Z-Creeper Automotive Garage Mechanic Rolling Seat Sky Blue
