Abstract: A foam container with an upper portion and a lower portion is provided. Upper lips formed by edges of upper walls of the upper portion distal from the top of the upper portion extend outward from the upper walls, while lower lips formed by edges of lower walls of the lower portion distal from the bottom surface extend outward from the upper walls. A groove is defined by the upper lips, and a rim is disposed at least partially along the lower lips. A peripheral indented segment in the lower walls and a peripheral ridge formed by the upper walls are dimensioned so as to render the container securably stackable with other containers. Arcs may be formed on the lower walls and the upper walls. The arcs may be centered on the walls with the walls having a thicker cross-section within at least a portion of the arcs.