As the title says, you can use these rather inexpensive balls for regular play, I did not see almost any difference from more expensive tournament tennis balls. They get the job done and I serve pretty hard.
The picture says these balls are made by penn, but everytime I buy it online, I receive ones made by 'extreme' instead. The quality of the ball is horrible! The strength of the ball only lasts for half an hour and it can hardly be played for a second time! Just don't buy it!!!
I placed an in store pickup and the **** I was sold were not Head nor Penn. This was an obvious bait and switch and very poor business practice. Beware!
I'm an avid tennis player on hard courts and these balls are average. They lasted for about 2 to 3 weeks and the fur and bounce fad away. About average for tennis balls.
High quality bright colored tennis balls. Purchased for a dog toy so cant say much for tennis. I will say the dog didn't chew it up quickly like some of the cheaper balls.