Abstract: A container having enhanced wall integrity with a rotational element and a stacking feature is provided. The container includes a sidewall having an alignment structure formed along a height of the sidewall and an upper stacking shoulder formed above the alignment structure. The alignment structure is adapted for orienting the container with respect to a second container so that the alignment structures of the containers become parallel with one another and the containers may be fully nested one within the other. The alignment structure can be recessed into the sidewall to form peaks and valleys along an inner surface of the container. The upper stacking feature is formed into the sidewall of the container and includes a radially extending wall portion and an upwardly extending wall portion that together form a stacking corner. The stacking shoulder is provided above the alignment structure facilitates nesting of two containers when stacked together.

Abstract: An improved tamper evident lid for a container is provided. The lid includes an annular sidewall with an upper section and a lower section connected together by a weakened portion. The lid includes one or more tamper evident locking components for securing the lid to the container. Each locking component extends inward from an interior surface of the lower sidewall section with a top wall that connects the locking component to the upper sidewall section. The lid includes a void space defined into the exterior of the annular sidewall and corresponding to each locking component. Each locking component forms a continuous enclosure separating the void spaces from the interior of the lid and preventing leakage of contents through void spaces. The void spaces and the weakened portion create a line of weakness that can provide visual evidence of tampering once the lid has been secured to a container.