Used only once, three years ago, for air transport. While the usage frequency was only that one time, I kept it at home for a while, considering preparation for emergencies, etc., but I'm putting it up for sale to free up shelf space. It's rated for up to 35 kg, but I used it for a 14 kg medium-sized dog. It has wheels for carrying (removable). The size with the wheels attached is 81 x 57 x 61 cm. The treats in the photo are not included. They were used for size reference. If you understand that this is a used item that has been stored at home, and if you are interested, I would be happy if you would consider it. I can ship it immediately.