Abstract: An attachment for bicycles for carrying packages, small articles, newspapers, and the like. The device includes a saddle-type load-carrying container over the rear wheel of a bicycle. An outrigger wheel assembly is connected to and spaced outwardly from each of the sides of the container including a load-bearing wheel mounted in a wheel skirt connected with the container side by an arrangement of straps and hinges which permit relative movement between the wheel skirt and the container allowing the wheel assembly to change positions relative to the rear wheel of the bicycle to compensate for irregular running surfaces. Vertically spaced bumper rollers are secured between the container sides and each wheel skirt to maintain the proper spacing in between the outrigger wheels and the container sides.