I used it once. The back is reinforced, and it has a belt on the front side of the body when used as a backpack, making it comfortable. However, I am selling it because the size didn't fit me. The fabric is still stiff, giving it a new feel, and I think it's a beautiful item. This is a carry-on size wheeled bag with a solid backpack function. Abroad Carry 43 ¥27,500 (tax included) Model number: AC-43 Size: Approximately H54 x W36 x D25 (including 5cm expansion) cm Weight/Capacity: Approximately 2750g, approximately 43 liters (when expanded) Fabric/Material: Nylon (khaki is polyester), 420D ripstop (1000D on the bottom), water-repellent finish Product Description Carry-on size (height + width + depth = 115cm or less). Shoulder straps and a wide waist belt are stored inside the back cover. The back when carrying it on your back uses breathable and cushioned sponge and mesh fabric. Inside, there is a cloth (support cross) to prevent luggage from shifting to the bottom. Placing heavy luggage at the top reduces the weight when carrying it on your back. The main pocket zipper uses a YKK lock slider that can be locked. The depth can be expanded by 5cm by opening the zipper, increasing the capacity. The handle on the bottom can be used to grab the luggage.