A completely collapsible handle and platform allow this cart to fold to the size of a briefcase. Strong and lightweight aluminum framing makes it easy to transport. The base may be used in two positions to accommodate small or large loads. Two swivel and two rigid casters are installed to give better steering control. The wheel brakes allow the cart to stay stationary while loading. Durable vinyl corner bumpers are impact resistant and help protect doorways and walls. This lightweight cart weighs in at just over 19 pounds yet hauls an incredible 300 pound load. The dimensions of the Road-Runner cart, in the fully collapsed transport mode, are H - 9.63" W - 16.5" D - 23.0". The handle height starts at 29.5" and extends up to 38". The platform length starts at 21.25" and extends to an impressive 31.5" for larger loads. The width is 16.5".