Multi-functional base for a plastic, wide-mouth, blow-molded container

A container, comprising:

• a blow molded plastic body having a circular base, a cylindrical sidewall projecting from said base, and a threaded finish opposite said base;
• said base having a discontinuous concave outer annular wall with an outer portion and an inner portion forming a container standing surface therebetween, said outer portion connecting to said sidewall;
• said base having an inner annular wall extending inwardly from said inner portion of said outer annular wall, said inner annular wall having an inner periphery and an outer periphery, said outer periphery connecting to a plurality of radial webs which extend at an elevation above said container standing surface and which connect to said sidewall;
• said base having an anti-inverting dome projecting upwardly from said inner periphery of said inner annular wall;
• said inner annular wall of said base flexing upwardly and downwardly in response to variations in pressures in the container without undergoing unwanted permanent deformation;
• and
• said inner portion of said outer annular wall has a support ridge formed therein above a level of said container standing surface to facilitate vertical stacking of containers having like bases.