General purpose case with clear PVC to see the contents. Very comfortable because you can get what you want to use right away. A4 size is suitable for storing B6 notebooks, writing instruments, etc. When storing small items, it can be compact; it has a gusset, so it can be used with thick items. You want to carry a notebook or notebook while holding meetings materials and more. A must have for business users. There is a slit on the back, so it is convenient for you to put papers in here.