Review on Airline-Approved CaiDieNu Pet Carrier - Soft-Sided Foldable For Cats & Dogs Up To 22 Lbs by Bryan Maignan

Folds flat for storage. I was a little concerned as it looked a little small when I zipped it together, but my 12lb cat fit in it just fine. Might be a little snug for my 16 lb fur baby however as it is shorter than my other cat basket. That said this is strong, sturdy, and has several different 'doorways' - one at the top of bag, one on front long side and both ends zip down also. Handles are sturdy, sides maintain their rigidity, and the mesh on the 'doors' is strong.