I bought this and used it once, but haven't used it since. It's a waste to just leave it stored, so I hope someone can make use of it. To save on shipping costs, I will fold it for shipping. I think it's best for dogs up to about 5 kilograms. When I bought it, there were bite marks on the part that clicks together, but it works fine. There are also some missing parts, but it's okay if you don't mind. Please check the photos. Pet backpack Pet carrier