Hand grippable bottle and preform

A blow molded container having a contour feature to facilitate handling of the container, the preform having a hollow interior for blow molding the container having the contour feature, the preform defining a longitudinal axis and comprising an integral structure, the hollow interior of which is shaped and sized to allow axial removal of the preform from a core of an injection mold in which the preform is molded, the preform having in interconnected axial sequence, a container neck finish forming portion defining an opening to the hollow interior, an annular container shoulder forming portion, an annular container first wall forming portion, an annular container intermediate wall forming portion, an annular container second wall forming portion and a closed container base forming portion, wherein the annular intermediate wall portion has a wall thickness greater than the first end the second annular wall portions, the blow molded container having, in interconnected axial sequence, a neck finish formed by the neck finish of the preform, a shoulder portion formed from the shoulder portion of the preform, first, intermediate and second wall portion formed from the first, intermediate and second wall portions of the preform and a closed base formed from the dosed base portion of the preform, the contour feature comprising an annular concavity in the intermediate wall portion of the preform, the annular concavity having a wall thickness greater than the wall thickness of the first and second wall portions of the blow molded container.