I have not yet tried Tranportbox on a journey but our cat loved them immediately. It is very large and probably too large for a purely domestic cat, as I let the cat flying but I need such a big box. You made a very strong impression with hard plastic. At the door I had only myself to find out how it works. Feeding and water bowls are in good size. A blanket fits in this size purely slack when it is a thin. Think it here is also good place for a puppy, dachshund - just smaller dogs. And cats anyway, could in the box 2-3 normal domestic cats (no big Norwegians - it 1-2) transport.