This Interactive Cat Toy Is Designed With 3 Levels Of Tracks And 3 Brightly Colored Moving Balls To Attract Kitty’S Attention! Your Cat Will Adore Batting, Swatting, And Pouncing The Bright Colored Balls As They Engage Their Natural Instincts To Hunt.Great For Single &Amp; Multiple Cat Households.A Small Safety Bar Across The Top Central Opening Keeps Overly Curious Kitties From Getting Stuck While Playing With This Track Toy.Durable Plastic And A Nina Ottossonn-Slip Base Hold The Tower Of Tracks In Place During Vigorous Play.