1. Discover ways to play: The marble run is connected at both ends by magnets. After connecting, turn them over to get toys of different shapes. The magnets can also connect multiple components together to form a giant tunnel for families with multiple cats. 2. Structure: The package includes colorful balls that can be placed on the track. When the track is unfolded, the balls will not fall out no matter how the cat plays. So cats don't have to throw them around or search under the sofa! 3. Quality Material: The scratching board is made of corrugated cardboard for longlasting use. The structure is precisely cut with a CNC machine, with edges that will not hurt your skin or pinch its claws. It is also very easy to store and reduce to the size of your palm! 4. PRACTICE YOUR CAT: This scratching board is a way to satisfy your cat's natural scratching needs while protecting your home and fitting well into your home decor.