Abstract: A container and closure assembly includes a container and a closure. The container defines an opening and includes a lip positioned around the opening. The closure includes a top portion defining a periphery, a skirt, a first and second blocking structure, a tab, a plurality of spaced apart first ribs, a plurality of spaced apart second ribs, and a plurality of first rib extensions. The skirt defines an internal closure space and including (i) a first skirt portion extending downwardly from the periphery, and (ii) a second skirt portion extending downwardly from a first part of the first skirt portion. The second skirt portion includes a first side edge and a second side edge that are spaced apart from each other to form a gap. The first blocking structure is secured to the skirt. The tab extends downwardly from a second part of the first skirt portion and is positioned in the gap.