Abstract: A preform for use in molding a bottle by blow molding includes a tubular sprout portion and a bottomed tubular preform body. The preform has a weight ranging from 82 to 90 g. The maximum wall thickness of the preform body ranges from 4.5 to 5.0 mm. The preform has a total length ranging from 165 to 175 mm.

Abstract: A resin made container includes a spout portion acting as an outlet for contents, a shoulder portion continuous with the spout portion, a body portion continuous with the shoulder portion, and a bottom portion continuous with the body portion and closing a lower end of the body portion. The body portion includes a plurality of approximately quadrangular shaped panel portions each having an upper side and a lower side thereof displaced; and between adjacent panel portions, a chevron-shaped rib is provided. Also, there is provided an annular receded rib which is receded to the inner side of the resin made container and which extends in a circumferential direction of the resin made container. The receded rib includes a plurality of protruding ribs protruding in a direction intersecting the extending direction of the receded rib, the protruding ribs being receded from the surface of the resin made container.