Abstract: A container comprises a bottom, a sidewall extending up therefrom, and a top opening opposite the bottom. In one advantageous form, the sidewall of the container has a uniform racetrack dimension from the bottom to proximate the top opening. The top opening has the same racetrack shape as the bottom and the top opening is in the form of a complete racetrack defined by the sidewall of the container body. In another advantageous form, one or more lip portions, in the form of one or more flanges, extends radially outwardly from the sidewall along the opposing parallel sides which form a perimeter around the top opening.