Nivia’s Twirl volleyball consists of a premium dimpled microfiber composite leather cover which helps you aim and shoot high shots with great accuracy. The new spiral construction technology gives more surface area to players to grasp the ball and get a btter grip which enhances their accuracy while shooting and passing the ball. The bladder and valve of the ball have high air retention ability that let you play peacefully for a hours at a stretch without having to refill the air. The cover is composed of 18-panel windings which keep the ball in shape and give a soft feel to it. This is a reliable ball. If you are a volleyball ball player, this is a great ball to buy. Made from strong, durable and long lasting material that is ideal for professional as well as training use.