I've only used the hard sided, plastic carriers mainly, but always thought they looked uncomfortable for my cat, even with a nice blanket inside. I saw this and immediately thought of the comfortable sides, soft cloth and the wheels that make the walk into the vet super smooth and easy. The cat doesn't really like it, but that is most likely because most trips are to the vet every once and awhile, but I feel better knowing that she' at least more comfortable.