Softballs are usually white, but many professional teams use yellow balls. Their circumference ranges between 10 and 16 inches. They weigh between 5.875 oz and 7 oz.
A softball's core is usually made from long fiber kapuk, a cork and rubber combination or polyurethane. The covering is made of leather, and it's sewn together with red threads.
The first softball game started on Thanksgiving Day in 1887 at the Farragut Boat Club in Chicago. Yale and Harvard alumni used a boxing glove and broom handle as makeshift ball and bat.
The game evolved over time, eventually earning a spot in the 1996 Summer Olympics.