Preform layered body and layered container

A preform layered body for forming a layered container comprising a cylindrical container body, a container bottom closing a lower end of the container body, and a container mouth formed at an upper end of the container body by biaxial stretch-blow forming, the preform layered body comprising:

• an inner-layer-use preform for forming an inner layer of the layered container;
• an outer-layer-use preform for forming an outer layer of the layered container;
• and
• a tag,
• wherein the inner-layer-use preform is disposed inside the outer-layer-use preform,
• the inner-layer-use preform includes an inner-layer-use bottom and an inner-layer-use body subjected to biaxial stretch-blow forming to form a bottom inner layer part and a body inner layer part of the layered container, and an inner-layer-use mouth that remains as a mouth inner layer part of the layered container without being subjected to biaxial stretch-blow forming,
• the outer-layer-use preform includes an outer-layer-use bottom and an outer-layer-use body subjected to biaxial stretch-blow forming to form a bottom outer layer part and a body outer layer part of the layered container, and an outer-layer-use mouth that remains as a mouth outer layer part of the layered container without being subjected to stretch-blow forming, and
• the tag is disposed between the outer-layer-use mouth and the inner-layer-use mouth.