Vertical handle with comfortable grip ensures wrists are in the correct position for pushing and steering "Safety Zone" shelves are the proper height for loading and unloading No-mark , extra load, cushion tread wheels absorb impact, reducing vibration and strain All joints are fully continuous-welded to better withstand heavy loads and frequent use 14-gauge stainless steel shelves reinforced for added strength > Stainless steel is easy to clean and sanitize Leg bumpers protect walls and furniture NSF listed