These tennis balls last a long time.

My group of guys has been using these ball for over 10 years. They are ideal for us old guys. We like their playability as well as endurance.

Great service,like the Dunlop balls!

love dunlop tennis balls.

these balls felt a little "light"; they hit well and lasted well with its cover and pressure; since most people use Penn or Wilson balls, these were easy to distinguish when balls would roll into each other's courts!!

I have always bought this type of tennis balls for their consistency and quality. I'm a 5.5 player so I go through one can of balls for each practice match I play and these balls always deliver.

Firm, long-lasting, true bounce. Too early to judge durability.

The felt doesn't nap up as quickly as the Dunlop Grand Prix extra duty. The ball is on the firm side without being too heavy. They felt just right for the strings I use, compared to Penn ATP which softened up. So far they seem similar to Dunlop Champion extra duty, but with nicer felt. I haven't used them long enough yet to rate the bounce longevity.

been enjoying playing with the dunlop grand prix all summer. they last a little longer then penn extra duty and have a pretty bright color that makes them easy to see. For about 0.50$ more then penn I think these are worth it.

Long lasting material on clay courts. Shining lasts longer than others.

I bought a case of these balls to try on hardtru clay, totally disappointed. The balls tend to fly once opened but within 20 minutes of play fluff up and get very slow.

Not a heavy ball but has a good bounce and lasts reasonably long on clay without fuzzing up to badly in humid weather. I don't notice much difference between this ball and the equivalent hard court ball made by Dunlop. The price is reasonable when purchased by the case.

These balls are great for teaching. Last longer than most.

Great Balls. Great feeling and better durability than all the other I had played.