One of the main reasons why the Petstages Tower of Tracks is loved by cat owners is its clever design. Let’s look at what makes its design so effective. The toy has three stacked levels, each with a track. Inside each track is a brightly colored ball. When your cat hits the ball, it rolls around the track smoothly. The balls never come out of the tracks, which means you don’t have to keep looking for them under furniture. The tower is made of strong plastic that can withstand rough play. Cats often bite, scratch, or push toys around, but this one stays strong. It also has a wide, sturdy base that prevents it from tipping over. Many cheap toys fall apart quickly, but this one lasts a long time.