cross section of a baseball![click to hear](/images/speaker.jpg)
A baseball has a cork core, which is wrapped in layers of rubber, wound with yarn and covered with leather.
stitches ![click to hear](/images/speaker.jpg)
The sewing that joins the two parts of the cover; it traditionally uses red thread.
cover ![click to hear](/images/speaker.jpg)
Outer layer of the ball made up of two white pieces of leather joined by stitching.
cork ball ![click to hear](/images/speaker.jpg)
Small sphere of cork that forms the central part of the ball.
yarn ball ![click to hear](/images/speaker.jpg)
Yarn wound around the center of the ball.