This item is handmade. It can be used as a bag-in-bag or a tool pouch. Size: Width: Approximately 20cm Height: Approximately 19cm Depth: 6cm There are pockets on both the front and back. One side has two compartments, and the other has a larger pocket with a one-touch hook. Inside, there are two compartments, a zippered pocket, a small pocket, and a B5-sized pocket. A hook is attached to one side. You can use your own shoulder strap with the D-rings on both sides to make a shoulder bag, or use a shorter belt for a waist pouch, or simply use it as a bag-in-bag. I make each item with care, but please refrain from purchasing if you are looking for the perfection of a mass-produced product.