Review on 🎾 Penn Extra Duty Championship Tennis Balls - Professional Pressurized Felt Tennis Balls by Carl Estell

I have been playing tennis regularly for 34 years. This is the first time I've bought balls for myself online - I usually buy a can from the pro shop. Penn makes a great ball, but there's something wrong with this fall of 12. Half the balls are no good straight out of the can. They barely bounced back. I suspect they've been sitting in a warehouse somewhere unpressurized for too long. I opened the balls and then I or someone else I was playing with had to open another can of balls before we could start the game. I am extremely disappointed.