An object of the present disclosure is to provide a product-filled outer bag that is labor-saving, resource-saving, space-saving, low-cost, and good sanitation, a method for manufacturing the same, a method for supplying the bag body, a tubular outer bag with fittings, and a product-filled outer bag. An object of the present invention is to provide a method for using a cylindrical outer bag. A product-filled outer bag (100) according to the present disclosure comprises a plurality of bag bodies (3) stacked continuously or intermittently in a row so that a part of the bag body (a product) overlaps, and is formed into a cylindrical shape with fittings. Wrapped in the outer bag 1, the bag bodies 3 are integrated while maintaining the stacking state. The tubular outer bag 1 with a fitting has a tubular shape continuously extending with the same inner diameter along the length direction X of the tube using a resin film as a base material 5 . It has at least one opening 6 that opens inward, and has one fitting 4 on the inner wall side of the base material 5 along the edge 6a of the opening, and the fitting 4 is engaged. there is [Selection drawing] Fig. 16【課題】本開示は、省人・省資源・省スペース・低コスト及び良好な衛生性を兼ね備えた製品入り外袋、その製造方法及び袋体の供給方法並びに嵌合具付き筒状外袋及び筒状外袋の使用方法を提供することを目的とする。【解決手段】本開示に係る製品入り外袋100は、製品である袋体の一部が重なるように連続又は間欠で一列に積み重ねられた複数個の袋体3を、嵌合具付き筒状外袋1で包み込んで、袋体3の積み重ねの状態を保持したままで一体化している。嵌合具付き筒状外袋1は、樹脂フィルムを基材5として筒の長さ方向Xに沿って同一内径で連続して延びた筒形状をなしており、筒の長さ方向Xに沿って開口する開口部6を少なくとも一つ有し、かつ、開口部の縁6aに沿って基材5の内壁側に嵌合具4を一つ有し、かつ、嵌合具4は咬合されている。【選択図】図16