Assorted case (3 of each color). Metro Balls® are the perfect colorful addition to your toy department and cash wrap. Unlike standard tennis balls, Metro Balls® are specially designed for pups made with cotton yarn and natural rubber, and no toxic gas. Each package contains 3 color coordinated balls with 5 color options available. Metro Balls are also a great way to add value to your gift area and make a unique hostess gift or pup birthday present.