Container having enhanced wall integrity and alignment element

A substantially rigid container comprising:

• a bottom wall;
• a plurality of sidewall panel sections extending upwardly from said bottom wall, said panel sections forming a generally frustoconical sidewall having a polygonal cross-sectional shape, an interior surface and an exterior surface;
• and
• a generally axially-extending alignment structure positioned at least partially within at least one said sidewall panel section, said generally axially-extending alignment structure comprising of an exterior surface that conforms to a corresponding interior surface of said generally axially-extending alignment structure;
• wherein said exterior surface of said generally axially-extending alignment structure contains two-oppositely sloping faces such that a longitudinal ridge is created within said generally axially-extending alignment structure;
• wherein said substantially rigid container is capable of being fully nested within a second generally identical container;
• wherein each said generally axially-extending alignment structure is at least partially protruding from said generally frustoconical sidewall and extending outwardly away from said exterior surface of said generally frustoconical sidewall forming radially intermittent peaks and valleys along interior and exterior surfaces of said container.