Collection: A bag that can store A4 size

Cases and bags for A4 size documents, files, laptops, etc.
It can be stored in A4 size for commuting to work or school, or for business purposes, so there is no need to fold documents.
It can be used in a variety of situations, from a document holder that can be used as is, to a tote bag that allows you to quickly take out the contents, and a large-capacity backpack.