These are the best carriers out there. We now have four of them, my daughter has six cats. We've had other carriers but this is by far the best. They are very easy to put together, much better than the type that click together or have sliders. The bolt and wing nut joiners make it easy and stronger. The two doors are a terrific feature. It's much easier to put a reluctant cat through the top door than it is to try getting one in the front door. So having the option is great. Ours go in through the top and come out through the door, perfect. The size is generous and there is lots of ventilation. Zero complaints here! I'd buy more if I need them.

Pros: Two doors, easy assembly, roomy, well made
Cons: None at all