One tennis ball in your right hand and one tennis ball in your left hand.
Throw both balls at the Nivsta Board at the same time and try and catch the rebound.
Go up in numbers of throws and catches.
One tennis ball in your right hand and one tennis ball in your left hand.
Throw both balls at the Nivsta Board at the same time and try and catch the rebound.
Go up in numbers of throws and catches.