A method of fabricating a bottle having a bottle base, the method comprising: a) providing a mold for the bottle based upon a mathematically-generated model generated by: i) creating and resolving a hemisphere profile of a bottle base; ii) while maintaining the hemisphere profile, creating and partially resolving a foot profile, wherein the foot profile is superimposed atop the hemisphere profile; iii) for one-half of the foot, establishing a foot width and an angle of a valley side of the foot and removing a portion of the foot to define the valley side of the foot, which meets the hemisphere profile at the established angle; iv) for the same half of the foot, adding a variable sized fillet radius along a corner edge of the foot and adding a fillet radius between the foot and the hemisphere profile; v) creating a mirror image for the one-half of the foot to make a complete foot; and vi) copy-rotating the created foot a plurality of times, to make a complete bottle base, the plurality of feet defining a plurality of valleys between the feet, each having a cross section between the feet and each cross section having a center portion which is convex; and b) stretch blow molding a preform using the mold provided in step a) to form the bottle comprising the complete bottle base; wherein each foot is resolved from the underlying hemispherical structure of the base. a) providing a mold for the bottle based upon a mathematically-generated model generated by: i) creating and resolving a hemisphere profile of a bottle base; ii) while maintaining the hemisphere profile, creating and partially resolving a foot profile, wherein the foot profile is superimposed atop the hemisphere profile; iii) for one-half of the foot, establishing a foot width and an angle of a valley side of the foot and removing a portion of the foot to define the valley side of the foot, which meets the hemisphere profile at the established angle; iv) for the same half of the foot, adding a variable sized fillet radius along a corner edge of the foot and adding a fillet radius between the foot and the hemisphere profile; v) creating a mirror image for the one-half of the foot to make a complete foot; and vi) copy-rotating the created foot a plurality of times, to make a complete bottle base, the plurality of feet defining a plurality of valleys between the feet, each having a cross section between the feet and each cross section having a center portion which is convex; and i) creating and resolving a hemisphere profile of a bottle base; ii) while maintaining the hemisphere profile, creating and partially resolving a foot profile, wherein the foot profile is superimposed atop the hemisphere profile; iii) for one-half of the foot, establishing a foot width and an angle of a valley side of the foot and removing a portion of the foot to define the valley side of the foot, which meets the hemisphere profile at the established angle; iv) for the same half of the foot, adding a variable sized fillet radius along a corner edge of the foot and adding a fillet radius between the foot and the hemisphere profile; v) creating a mirror image for the one-half of the foot to make a complete foot; and vi) copy-rotating the created foot a plurality of times, to make a complete bottle base, the plurality of feet defining a plurality of valleys between the feet, each having a cross section between the feet and each cross section having a center portion which is convex; and b) stretch blow molding a preform using the mold provided in step a) to form the bottle comprising the complete bottle base; <EOS>