Penn Championship Tennis Balls - Extra Duty Felt Pressurized Tennis Balls - (2 Cans, 6 Balls)

These balls were of poor quality. The rubber lines were not placed on properly, so that there was extra rubber hanging off the ball. I have never seen something like this before. In addition, some of the balls were dirty - smudged with some unknown substance. Considering these balls are not inexpensive, I was very disappointed with their quality. I would not repurchase.