[TRAINING VOLLEYBALL: The heavy weight volleyball is an official size 5 volleyball that is 8.2 inches in diameter and weighs 17-17.5 ounces / 1.1 lbs roughly twice as much as an ordinary volleyball GREAT FEEL: The setter volleyball is made of high performance PU leather. The volleyball ball has a good feel is durable and will not harm your arms. The volleyballs are suitable for young volleyballers whether you are a setter or a beginner GREAT TRAINER: The extra weight of the volleyball is good for training. It helps to build strength in the arms shoulders back wrists and fingers. Additionally the ball increases setting control and setting strength SUPERB STABILITY - The volleyball is suitable for both indoor and outdoor use. The explosive-proof material used to make the volleyball can withstand significant impact and friction WARM TIPS – For safe shipping the volleyball is deflated and without a pump. The weighted volleyball will be your good volleyball training partner and help you explore the boundaries of your potential]