My dopey cats are delighted with this. I have three- two rambunctious year-ish olds and a senior and they’re all in the 10-15 lb range. All three of them have been on this with no issue. I do have it tucked into a corner to aid in security, but I haven’t heard it so much as wobble, and it isn’t anchored into the wall. It is additionally surrounded by furniture out of safety and necessity, but I am pleased to note my precautions have all been superfluous. It is very stable. Even the two lunatic youngsters haven’t managed to move it while parkouring over and through it. Each of the cats have claimed dibs on a favorite space on it, so everyone’s happy. (Grumpy senior kitty claimed the den where she can hide from the rodeo!)
The nice soft grey is attractive (imo, more so than the usual beige). I was able to put it together by myself with no problems. I’m very pleased with it.