Hi, it's a great cage

the tray sometimes slips out when you've pulled it out more than half way (but I only do that when cleaning out and my piggles aren't in it!). Be careful to check the plastic base when it arrives, mine was damaged on the corner. The company was good about it though, I sent a photo and because it could be glued back together they gave me quite a large discount

They did also offer a complete replacement. I use just 1 of the levels and a ramp to give extra space for zooming around and I did cut up an old tea towel to put on the ramp to make it easier to get up and down!
ps. top tip.....if you put it together with you on the inside then you get trapped!{:|:{:red x