The ball, which is 9-9&FRAC14; in. in circumference and weighs 5-5&FRAC14; oz., is made of yarn wound upon a small core of vulcanized rubber and covered with white leather, which may not be intentionally discoloured. The bat must be round, not over 2&FRAC34; in. in diameter at the thickest part, nor more than 42 in. in length. It is usually made of ash or some other hard wood, and the handle may be wound with twine. Three-cornered spikes are usually worn on the players' shoes. The catcher and first-baseman (v. infra) may wear a glove of any size on one hand; the gloves worn by all other players may not measure more than 14 in. round the palm nor weigh more than 10 oz.