Easy to assemble and our cats absolutely love it. It wobbles a little, which is a good thing because when they start ripping at the highest level, the tree shakes a bit so it doesn't tip over. But it feels sturdy. We have had both cats (around 10lbs each) on the tree at the same time and I have no concerns about it tipping over. It's rather large, but you can bend the leaves around to make it a bit slimmer, or stretch them out to really take up space.