This is a bag originally designed for Japanese customers, it combines the functions of a backpack and a folding chair. I think it is designed for backpackers who like hiking or long-distance travel. Frankly speaking...I actually like this bag, it was also the bag that the Wistron Electronics welfare department asked about. We used an aluminum alloy tube to make the bracket of the whole bag, plus anti-compression and reflective straps, which greatly reduced the pressure on the user's shoulders. The whole bag is made of anti-fouling and water-repellent nylon, you don't have to worry about your belongings being soiled when climbing mountains or raining. For backpackers, we put a lot of ingenuity into the design of the bag body, such as the inside of the bag is like a small suitcase, zipper bags, luggage fixing belts all inside, and zipper pockets on the outside of the bag and a very thoughtful design... thermal insulation pockets. It's amazing! On the whole, because the material of the bag body is relatively heavy, we use an aluminum alloy tube as a bracket, so that the weight of the whole bag can be controlled within 1.5kg, and it can also bear a relatively large body weight. This bag can bear a weight of about 60kg, very suitable for girls and children above grade 5 in elementary school. (Sorry...the large chair bag has been sold out) There is no online sale at present, I just took back the goods that I had sent to the e-commerce warehouse. If you want to see more detailed information, I will put the link at the bottom.