The set includes two Waboba Moon Balls, designed for high-energy outdoor play. The Moon Ball produces a distinctive popping sound upon impact with hard surfaces. It achieves bounce heights of up to 100 feet (30 meters), making it suitable for active games in various settings such as playgrounds, skate parks, and gym courts. The balls measure 2.48 inches in diameter and are recommended for ages 5 and up. Colors may vary.