a plastic container having a first portion , a second portion , and a waist between the first portion and the second portion . the waist includes a first angled portion coupled to the first portion , a second angled portion coupled to the second portion , and a curved portion connecting the first angled portion to the second angled portion for forming a deformable region for preventing a catastrophic failure of the waist when the plastic container is filled and capped and subjected to an external force .