To provide a container for storing and housing shopping bags made of polyethylene or the like while being classified in size for reuse.

Upper and lower parts 2 for an elastic string to pass are provided on three cylinders 1 which are flexible and opaque and can be identified as three types, the elastic string is passed through each of them, and the string is pulled into a ring for fixing. At this time, an upper entrance 3 is opened larger than a lower exit 4. A tape 5 for passing the string is attached to an upper part on a surface of the cylinder 1, pieces of Velcro 6 are attached to parts where bags are in contact with one another to provide a bag. The string is passed through three of the bags to be stable with the Velcro 6. The bag is hung on a wall or an appropriate place.