Preform and container comprising reinforcing elements

A preform for a container, the preform comprising:

• three reinforcing elements, each having a substantially triangular cross-section and provided on an inner side of a side wall of the preform, the reinforcing elements each extend at a step in a direction perpendicular to a longitudinal axis of the preform and are equidistant to each adjacent reinforcing element, wherein at each step, the inner side of the side wall is bent inward at an angle of about 90° relative to a longitudinal axis of the preform, and wherein the reinforcing elements comprise a bottom reinforcing element located at a first distance from a tip of the preform, a top reinforcing element located at a second distance from the tip of the preform, and a middle reinforcing element located between the bottom and the top reinforcing element at a third distance from the tip of the preform, the ratio of the height of the preform to the third distance is 2.24 to 3.37, the ratio of the height of the preform to the first distance is 4.48 to 13.46, the ratio of the height of the preform to the second distance is 1.34 to 1.93, and the three reinforcing elements each have a thickness which is 7% to 50% greater than a thickness of the side wall of the preform.