INDOOR or OUTDOOR FUN! 15-Inch diameter ball! includes 1 ball with valve insert, ball material is durable heavy gauge vinyl, inflates in minutes! Easy to clean with a hose, EZ- grip handle THE BOUNCIEST! Great birthday party present or Christmas gift, boys and girls, toddlers and preschoolers. EXERCISE! A great way to get outside! Play for hours! Promotes balance, coordination, core strength, cardio exercise, laughter, and tired kids. A great outlet for all your kids energy! Perfect size for toddlers and preschool aged kids