The transport box is very easy to assemble and to all who have already possessed such a thing without creating the enclosed instructions. In particular, the device for fastening a seat belt while driving, I find a great and valuable device. They smell unpleasant even after chemical or otherwise. Our Stubentiger took it immediately in fog and did not want to get out. However, if you want to take two cats in the box, must have very little darlings, as the place for a while well enough, but two is too small. For the price, but a more than good investment.