Manufacturers of book bags are constantly developing new convenient models, improving the design and functionality of the most important school attribute. The Concentrate Company invented a new and unique ergonomic school bag with a seat, which is hung on a chair not a desk. The main feature of Chairpadbag is that its ergonomic design allows you to make a chair more comfortable, and work in the classroom effectively. While unfold, a backpack turns into a seat on a chair and storage...