This multipurpose wallet is designed to be carried inside your bag. Its objective is to provide greater order and functionality within the large bag that you use daily. You can store in it things you need to find quickly, small things of value that you don't want to be lost, money, glasses, cables, etc. On the back it has a velcro strap to be able to hook it on the items from our Professional collection. The large bags in our Professional collection have two velcro straps inside, specially designed to hang up to two multipurpose pouches. Only a multipurpose pouch is included with the large bags in the Professional collection. If you want a second one or use it for another bag, you can buy your multipurpose pouch here separately.