Active Recreation: Designed to be the "highest bouncy ball on Earth," they are used for high-energy games like catch, kickball, and "keep it up" in backyards, parks, or gymnasiums. Athletic Training: Professional athletes and coaches use them to improve hand-eye coordination, reaction time, and agility. Their cratered design causes them to bounce in unpredictable "wacky" ways, challenging the user's reflexes. Sensory & Therapy: They are popular sensory toys for children with ADHD or autism because of their tactile cratered surface and the satisfying "pop" sound they make when hitting a hard surface. Stress Relief: Adults often use them as fidget toys or stress balls to provide a mental reset and relieve tension during work or study. Water Play: Many versions are buoyant and can be used for water games in pools or at the beach, though they typically do not bounce on the water's surface itself.