The cricket ball is a small, hard ball used in the sport of cricket. It is made of leather and has a cork core. The ball is about 2.75 inches in diameter and weighs about 5.5 ounces. The ball is red in color and has a seam running around the center. The seam is made of string and helps the ball to swing in the air. The cricket ball is used to hit the wickets, which are three wooden stumps that are located at the center of the pitch.