Keep your cat entertained and protect your furniture with this kraft cardboard cat tower! This all-in-one cat activity center features multi-level platforms, private hideout condos, tunnel holes, sisal scratching posts and dual-sided scratching ramps. It fully satisfies your cat's natural urge to climb, explore, scratch, hide and nap, delivering hours of fun for kittens and medium cats, with a 33 lbs maximum weight capacity. Thanks to the flexible modular DIY design, all interlocking cardboard blocks can be reconfigured freely. Mix and match pieces to build custom layouts that fit your room, constantly refresh your cat's play space and maintain their curiosity. Made of sturdy recycled kraft cardboard, this cat house is lightweight, simple to wipe clean and resists pet hair buildup. Even the shipping box can be reused as an extra bonus cat hideaway for sustainable living. Built-in sisal scratching posts and heavy-duty cardboard scratching surfaces draw your cat's scratching instinct away from your sofas, drapes and home furnishings. The reinforced interlocking frame stays stable during jumping and rough play, preventing wobble or tipping, so your kitty can play safely while you enjoy complete peace of mind.