The Big Idea It's a gym jam, complete with warm up routines, kid-fun exercise moves, twinkling light shows, and jammin' musical tunes. This kid-sized musical workout weight is the magical way to get kids up and moving, building fit bodies and healthy habits that last a lifetime. Developed in consultation with ACE certified personal trainer and children's fitness coach. Shh... They're LearningDevelops gross motor skills, coordination, and balanceExercise boosts brain power.Enhances listening skills and provides practice following directionsCut to the Chase Electronic free weight gets kids moving their bodiesExercises develop by a professional trainerGreat for home or classroom use