What exactly are pressureless tennis balls?

Answer 1

Pressureless tennis balls have solid, rubber cores, in contrast to air-filled tennis balls. Pressureless tennis balls are long-lasting since there is no air inside them to escape, but do cost more. They do need to be replaced eventually when the felt wears out.

Answer 2

Pressureless balls usually have a stiffer, woodier feel than pressurized balls, and except for the Tretorn brand, they're not quite as bouncy new. Unlike pressurized balls, though, they do not lose bounce over time. In fact, they get bouncier as they get lighter, due to fuzz loss. The balder they get, the more their flight, bounce, and spin response changes from what you'd expect of tennis balls.

Answer 3

I practice with Slazenger high impact all surface balls. They come in a white can with the Wimbledon logo, and have a lot of zip and have stayed new longer than any balls I've ever purchased. AVOID WILSONS. They degrade super fast IMO. They are however 10 cents more than most other balls (I know FANCCCCCCCY) :-P

Answer 4

They are made without internal air pressure and play like pressurized balls but cost a bit more because they last longer. However, the felt cover wears anyway, especially on hard courts, so the presurized type are good to use if you like to dispose of worn balls frequently.

Answer 5

They last longer. Used in Europe a bit more. They are like hitting rocks. They play like crud. It is just a very hard core that was filled. Regular ball are less thick thus lighter so they do not last at all. Trust me on this one. If you are training do not use them, pay the extra cost.

Answer 6

http://tennis.about.com/od/tennisballfaq/f/faqballs023.htm