Keep on your toes and work out with the Boxing Ball 3-Weight Headband Reflex Trainer Stay in shape at home by strapping on this headband and practicing your boxing skills Ideal for improving hand-eye coordination and reflexes Comes with 3 different colour balls with different weights and resistances When each stage becomes too easy, simply replace the ball with the next one Black ball: novice: 0.71oz - lightweight and soft Red ball: intermediate: 0.71oz - more tough to improve your reactions Dark red ball: expert: 2.28oz - high elasticity and ideal for punching Materials: PUF (PU foam) Adjustable head circumference: 17.32" - 25.2" Save 60% on the Boxing Ball 3-Weight Headband Reflex Trainer - now 11.99 pounds