[What's in the box]--4 balls of different weights. 2 nylon elastic adjustable headbands. 4 spare elastic ropes with different tightness. [Why Buy]--By using boxing reflex balls, you or your children can perform simple boxing training at a lower cost and improve reflexes, timing, accuracy, concentration, hand-eye coordination and other abilities. [Family Fun]--Suitable for ages 8-70, the set comes with two adjustable headbands, allowing two users to hold family games, increasing the time you spend interacting with your children while exercising. [Convenient and Safe] -- Simple and easy to use, you can start boxing practice anytime and anywhere. The soft punch ball will not harm you or your child under any circumstances. [Gift Idea]--Great boxing gift for men! Boxing balls are a healthy and innovative gift for teenage boys. Once he gets used to it, he'll love it.