These are balls for indoor and outdoor play. In terms of the durability and bounce they are perfect one ball will last me multiple games before I notice a drop off in the way they feel and operate. You can tell from the feel that they are high quality and the price isn't that high for such a great ball.

Started playing PB a year ago and still use them. A few have cracked because another played slammed it onto the court aggressively. I like this brand and they’re easy to see.

Seems to play and wear well.

It seems like these days, there are more and more pickleball paddle companies popping up... and along with their paddles, it is just a matter of time until they each come out with their own ball. Most of these balls seem to miss the mark in one way or another, and pass inferior products off as premium just by stuffing them into a box with cool branding. I've seen it before with other pickleballs, and I had extremely low expectations for these Professor Premo40s when I decided to give them a try...but I am man enough to admit when I am wrong. These balls are actually pretty darn good, and a pretty decent value to boot.When on the court, I found that this ball had more pop off the paddle than the similarly priced Franklin X-40s, and compared more closely to a Dura Fast 40. In terms of durability, I am no banger...but I have played several games with this ball on sub-40 degree days, without cracks or any signs of flattening.Out of the box, this ball is slick smooth, but even with that slickness, I still found it to be more receptive to spin than the Dura or Franklin. Compared to those other two balls, the Professor Premo is slightly (.5mm) larger in diameter, resulting in more surface area. Inversely, the Premo has smaller diameter holes than the Dura or Franklin. Coupling those two stats together, results in a greater percentage of the ball being made up of actual material instead of holes...meaning more contact with the paddle. This also translates into cleaner impacts with the ground and more consistent and predictable post bounce trajectories. Plus, once this ball gets roughed up a little bit through play, it's performance and spin seems to only improve.On the downside, that extra surface area does create a larger target for passing wind, and I found that the Premo did not hold a line in the breeze quite as well as the Dura or a Penn Pro 40. I found the experience in the wind to be pretty similar to playing with a Franklin X-40.Beyond gameplay, what really caused me to fall in like with this ball is it's quality construction. Something I have learned is that one-piece balls, like the Premo, seem to vary from company to company, particularly in the quality of their rotomolding process. These variances result in balls of inconsistent thicknesses, and often wide variances in how thick different parts of the ball are. A certain amount of variation is to be expected, but the greater the variance, the higher the chance for inconsistent flight. Plus, the thin spots become lightning rods for potential breakage.I was pleasantly surprised to find that the Professor Premos not only had one of the the lowest thickness variances out of all the one piece balls I have tested to date, but also one of the thickest shells overall...meaning this ball should not only fly consistently, but should also hold up better than most.Overall, I am impressed with the Premo40, and if you are looking for a bit more speed and spin from your pickleball game than you are currently finding with the X-40, this is an excellent choice!

The Professor Pickleball Balls are top-notch! They offer a perfect balance of durability and consistency, maintaining their bounce and flight even after extended play. The bright color makes them easy to spot on the court, and they perform well in outdoor conditions.