Review on WPS Airline Approved Removable Wheeled Pet Carrier: Ultimate Strength Design, Mesh Panels & Plush Mat. Compact and Durable by Rosa Gomez

This bag is really good for the airport. You can easily carry it around like luggage. The only downside is that if the pet leans left or right the bag will fall off, but that actually put my dog over the weight limit by a few pounds. She is 26 pounds. She was also new to flying. So if your dog is fine and sitting the way it's supposed to be, then he's fine. The reason it tips over is because there's no support to keep the side up, but it's handy when placed under the seat because it can fall further down to fit under the seat. The wheels are very easy to remove, so there is more space when you put your pet under the seat. They are just velcro on/off. Overall the carrier is really good.