Bought it for our two cats - one is a 6 month Mainecoon kitten and other 1 yr Bombay cat DSH that is smaller than the MC. Easy to unpack but the instructions aren't complete as they don't tell you how to secure the velcro or the back wheels. tried it the first time 2 nights ago. The cats were inquisitive about it and I took them for a ride. The DSH managed to squeeze and bolt out of the side of the top cover where it meets the steel bars. There is a bit of velcro to secure it but that doesn't close the gaps! The rear wheel also comes off every now and then. No instructions on how to secure it in place (I have pushed it in as per the manual)