Maybe one of these similar products would be of interest:-
Traxion 1-700 ProGear Mesh Flex Mechanic's Creeper
Traxion 2-720 ProGear Mesh Flex Seat 400lb Weight Capacity
Traxion 3-700 Traxion ProGear TopSide Creeper with 400 lb. Capacity
ProGear Wide Body Creeper REL-1-100
5" Wheels For Traxion ProGear Mobile Rolling Gear Seat - New From Traxion