Katziela Airline Approved Rolling Pet Carrier for Small Dogs & Cats - TSA Compliant Soft-Sided Travel Carrier with Removable Wheels - Perfect for Airplane Underseat Storage & Road Trips

Great rolling pet carrier that I use to take my cat to the vet. The adjustable metal handle works well to pull along the carrier on sidewalks or indoors. The carrier is long enough and tall enough for my tall, 15-pound cat. Lots of windows to look out. Six wheels make it steadier than those four-wheel carriers that tip sidewards. Only the front two wheels turn, but that seems fine. It has both handles and a shoulder strap to carry it if you prefer that to rolling. It also has a strap inside to attach to the pet's collar if you're afraid he or she will dash out when you open the end. Inside is a soft, washable bed.The base for the wheels is held on to the rest of the carrier by velcro tabs. The base with wheels can be taken off for airplane trips so the carrier will fit under the seat in front of you (check the dimension of your airline's plane seats). It's easy to take the base off, but I imagine it would be awkward on a plane with a pet inside, since you have to turn the carrier upside down.The top of the carrier doesn't open, only the ends. The zippers on the doors are lockable but the locks are almost impossible to squeeze enough to open them again. I would use a wire bread tie to attach the two zippers instead, so that the clever cat or dog can't manage to unzip from inside. Small zippered pockets are only large enough for a tiny bag of treats or tiny roll of dog pooh picker-uppers. There is one larger net pocket at the end, which doesn't have a zipper to close it.I did a lot of research and this seems to be the best around for a cat or probably the best for a small dog. It comes with a nice aqua bag for storage. I'm very pleased I bought it.