1There are small bells that give out sounds when cats play, which adds to the fun of the activity. 2Builtin luminous ball, when the cat is playing with toys, pull down the partition, the ball is shining and automatically go out when not playing. 3Add catnip balls in the middle, catnip can help cats spit out hair balls and help digestion. 4There are three holes can be installed, you can choose to press balls into any one when using. 5Rotatable, with sound and has luminous ball, more interesting, let cats enjoy themself.