【Pet-friendly Materials】Each tier contains CARB P2-compliant particle board construction with soft plush fabric covering; this cat tower is designed to bring a safe, sturdy, stable home and entertaining center for your little angels. 【Cater To Cats' Scratching Preferences】Sisal-coiled scratching posts at different heights help control cats' nail growth and keep your kitty's claws groomed. Varying heights help cats to stretch and tone muscle while reducing/preventing your cats from plucking your furniture and carpets!. 【2 Toy Balls Add Extra Fun】Combine a bell and dangling ball into a great cat toy! Attached to the top perch hangs a ball with a bell that stimulates your cat's hunting instincts and lets them run and jump like wild animals.