These balls last forever. I'm a 4.0 player who plays with a 5.0 player. We hit the ball pretty hard and they last set after set. More expensive but well worth the price. I have opened up two other cans of balls (Wilson US Open & Dunlop) for comparison. There truly is NO comparison. These balls last set after set.
Opened the can on Monday, played for two hours, and played with them again the following Monday. Excellent balls! Tom
These are the best, most durable tennis balls I have ever played with. They play the same in the 5th set as they did in the first and are even good to hit with days and days after they were opened. Very HOT balls!