Review on Expandable Cat Backpack, Airline-Approved Pet Carrier Backpack with Transparent Capsule Design for Travel, Hiking, and Outdoor Use - Pink by Kim Savage

Maybe other brands are better but this one is just a backpack with a window in the front. (My 10 lb cat looks devastated and doesn't know what to do) No real sex. (If you pick up a carrier with a cat in it, the bottom will sag and squeeze the cat harder.) Smells awful like chemicals or possibly paint. Bad construction method. Small shaggy parts are left around the zipper and eyelets. Bottom line, it's a project, but a good starting point. I'll wash it off and add some internal structure and it should be fine after that.