Baseball equipment and clothing

Bat
A rounded, solid wooden or hollow aluminum bat. Wooden bats are traditionally made from ash wood, though maple is also sometimes used. Aluminum bats are not permitted in professional leagues, but are frequently used in amateur leagues.
Ball
A cork sphere, tightly wound with layers of yarn or string and covered with a stitched leather coat.
Base
One of four corners of the infield which must be touched by a runner in order to score a run; more specifically, they are canvas bags (at first, second, and third base) and a rubber plate (at home).
Glove
Leather gloves worn by players in the field. Long fingers and a webbed "pocket" between the thumb and first finger allows the fielder to catch the ball more easily.
Catcher's mitt
Leather mitt are worn by catchers. It is much wider than a normal fielder's glove and the four fingers are connected. The mitt is also better-padded than the standard fielder's glove.
First baseman's mitt
Leather mitt worn by first basemen. It is longer and wider than a standard fielder's glove. The four fingers are connected and the glove is rounded like a catcher's mitt. A first baseman's mitt has a bit more padding than a standard fielder's glove
Batting gloves
Gloves often worn on one or both hands by the batter. They offer additional grip and eliminate some of the shock when making contact with the ball.
Batting helmet
Helmet worn by batter to protect the head and the ear facing the pitcher from the ball.
Baseball cap
Hat worn by all players. Designed to shade the eyes from the sun, this hat design has become popular with the general public.