I'm delighted at the one I got for traveling. It's designed as airline approved (though sometimes it can be a squeeze to get it to fit under the seat), but it has a handle and wheels for wheeling through the airport. In the car, it doubles as a carseat. Walking, it triples as a backpack carrier.
It's lasted so long because it's sturdy.
Not sure if this is the same brand but it looks like this:
Snoozer Roll Around Travel Pet Carrier - Pet Carriers with Wheels - Pet Travel Center
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Mike ~ Doting Dad to Jillie, Harper, Molly, Cooper, Eddie (RIP), Lucy (RIP), Rusty (RIP) and Jack (RIP).
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