I did! It fit two large kittens comfortably, and my big F6C boy fits in it well, too. It rolls smoothly, lays flat for shoving under the seat on the plane, (and was regulation size for that airline) has really sturdy zippers, though I secured them with clips for added safety, and has velcroed pockets for storage. I was even able to fit a small emergency litter box in the bottom, and an emergency clean-up kit. It has a telescoping handle and regular handles, and can be used also as a backpack. I've seen them priced anywhere between $30 (what I paid) and $100. Long before the show, I would leave it out for the cats to explore. It has a dark sturdy mesh front and sides, and my kittens never made a peep on the trip there and back to the show....people were surprised to see them in it, they were so quiet and good!