Ragdoll likes it
This was purchased for our indoor cat; a 4.7 kg Ragdoll. We initially put him in it and took him out but now he knows what is involved he chooses whether he wants to get in when we get it out.
It's a brilliant idea and my son loves that we can take his cat with us to drop him off at school. I wish it was a little bigger though as our Ragdoll is only 9 months old so he will have to squeeze in if he gets any bigger!
The quality is good, no complaints there :)