I ordered this cat tree for my cats. They're always looking to climb and scratch things. I thought they would enjoy this. Putting this together took me about a half hour. It wasn't effortless as the product was described, but it wasn't difficult either. The hardest part was lining up the pillars with the holes. My biggest cat showed interest in this as I was building it. After completing the assembly, I let my biggest cat play with it. He's about 12-15 lbs. I noticed right away that he was almost too big for the cat tree. He fit in the various cubbies, but barely. The tree also felt a bit wobbly compared to other trees I've owned in the past. This might work well for kittens, but I'm not sure this is a great fit for full sized cats.