Hand Exercise Balls , Better Training Sponge Comfortable Grip Strength Ball for Practice

Feature : 1 . Piano Training : Hold the exercise ball in your hand when playing the piano , which will help studying the correct fingering . 2 . Smart Exercise : These balls are suitable for hand opening expansion , finger strength boosting , palm support and wrist lift . 3 . 4Pcs in 1 Pack : There are 4pcs training ball with different sizes , making the practice needs for both adults and children . 4 . Great Material : Using premium sponge material with high elasticity , very comfortable to use and also quick in rebounding . 5 . Easy Carrying : Comes with a compact size and a light weight , you can easily carry the ball to exercise anytime and anywhere . Specification : Item Type : Hand Exercise BallMaterial : Sponge Package List : 4 xHand Exercise Ball

• Piano Training : Hold the exercise ball in your hand when playing the piano , which will help studying the correct fingering .
• Smart Exercise : These balls are suitable for hand opening expansion , finger strength boosting , palm support and wrist lift .
• 4Pcs in 1 Pack : There are 4pcs training ball with different sizes , making the practice needs for both adults and children .
• Great Material : Using premium sponge material with high elasticity , very comfortable to use and also quick in rebounding .
• Easy Carrying : Comes with a compact size and a light weight , you can easily carry the ball to exercise anytime and anywhere .