Cat Tree Tower for Indoor CatProduct Features 1. Sturdy and Firm: Made of high quality natural particle board, and the overall rectangular design ensures that the cat tree is stable without wobbling and tipping. Even with 4 levels of jumping height, the cat won't knock it over when jumping up and down. 2. Broad Activity Platform: This cat tree tower has five tiers and each cat can own one piece of activity platform. There's no need for them to fight over a nap spot. It's Perfect