It depends. What sports ball?
They are made from lots of different materials which vary from one sport to another.
Balls were manufactured by Charles Goodyear around 1836.
In the sport of football, the slang-term 'pigskin' is used. This is due to the fact that the first balls were made out of natural materials, such as inflated pig bladder.
Squash balls can be purchased online through a variety of websites such as Amazon and Sports Chalet. Squash balls are also available at many local sports and athletics stores such as Sports Authority or Academy Sports.
balls
England, UK
Balls
At first the tennis balls were made of leather stuffed with chalk, sand and wool.
The Sports Authority website does sell Pilates exercise balls. They offer both stability and toning balls in a variety of sizes and weights.
The tennis balls were at first made of solid wood, but then replaced by leather balls which were stuffed with bran
The best Wiffle balls are the original Wiffle balls made in Shelton CT. They can be purchased at Toys r Us, K-mart, Stop n Shop, CVS, Sports Authority, Modell's, etc.