PET-FRIENDLY MATERIALS: Constructed of solid particleboard and plush and sisal ropes, this free-standing cat tree is pet-friendly and durable for a long time, with no hazardous substances to your cats and families DANGLING BALL: The cat condo and the top perch hang a ball for more excitement, and you can remove it or replace it with your own balls CAT SCRATCHING POSTS: Three sisal scratching posts in different heights satisfy several cats and their various scratching habits. More importantly, free your fine furniture from those sharp little claws FOR FUN & REST: This multifunctional cat house will always meet your cat's needs. Sleeping well in the comfy condos without fighting or lounging in the perch or platform. Each cat will find his/her favorite place SECURITY & PROTECTION: Considering the cats' habits and characteristics, we add an anti-toppling plastic strap attached to the middle board for better stability, through which you can anchor the cat tree to the wall