Volleyballs are specially designed balls used in the sport of volleyball. They are typically made of a soft, synthetic leather or composite material, which allows for better grip and control. A standard volleyball has a circumference of about 65 to 67 centimeters and weighs between 260 to 280 grams. The ball is filled with air, providing a lightweight feel that makes it easier to hit and pass. In indoor volleyball, the ball is usually lighter and softer than those used in beach volleyball, which are slightly heavier and more durable to withstand outdoor conditions. The design of volleyballs often features a distinctive pattern of panels, usually in bright colors, to enhance visibility during play.