To ease the job for replacing goods at a cash desk when shopping at a supermarket; to make each of the bags not too big when carrying them home by handling them as independent bag bodies almost equivalent to the size of conventional throwaway plastic gags to make it possible to load them in the bag of a bicycle or carry them separately by both hands; and to lead to an environment problem solution by using a repeatedly usable material as a replacement of a conventional throwaway plastic bag.
The shopping bags have the feature that each of two or more bags has an independent bag body with handles; each bag body is provided with a connector part to mutually connect with other bag body and at least the bag body positioning outside is provided with an attachment part to attach with a bag of a supermarket or the like.