This cage is great. It took me a while to put together, but that was because I couldn't find the instructions which were on the underside of the box, and not all that clear, but I managed to get it sussed from the pictures on the box which were a great help. My hamster loves it, the little house is cosy, and the cats can't get to him in this cage. All round great one.
A bit of a fiddle when its cage clearing time, one clip undone and the whole thing collapses, so make sure you move the hampster out before you undo any clips (to prevent hamster from getting crushed or escaping).
Our hamster had learnt to knaw and open the latch so we've got mini padlocks on the doors. We've also bought additional connector tubes which are fun to customise and and make external tunnels around the cage.
It's too hard to put together and the sides are too hard to get on and hang off when your putting the rest together! The instructions are ridiculous and written in morse code! Don't buy the rubbish cage