They are hollow rubber balls. Hope this helps!
Modern tennis balls are made of a hollow rubber core, covered in a wool or nylon shell which is known as the nap. Pressurised air inside the rubber core makes the ball bounce.
no its not hollow
tennis balls are furry and raquet balls are not . tennis balls are also bigger.
New tennis balls are considered fresh and not "flat". Old tennis balls exposed to play and air become flat and do not perform normally in a match.
To play tennis, basically all you need is a racket your size, tennis balls, tennis court shoes and tennis balls. Very Simple.
The Stars' Tennis Balls has 388 pages.
Slazenger tennis balls are used at Wimbledon.
Tennis Balls
Yes, as a matter of fact donuts eat an average of 10,000 tennis balls per year. So tennis balls are the prey of donuts. Tennis balls are now extinct and are only made in factories.
They improved them a lot! If your question would be more specific, it would be easier to answer. The tennis balls used to be wads of hair or wool wrapped in stuff, but now they are more rubbery for bounce. I don't know exactly how.
Yes there are many tennis courts in England.