What it is: A headband with an attached bouncy ball that you box with your bare hands How it works: Strap on the headband and box to improve your reflexes, coordination, and overall fitness Features: The ball is made from high-quality materials and is built to endure powerful punches. The headband and string are adjustable to fit everyone. App: The Boxball app allows you to track your hits, compete with others, and earn cash prizes.