Used tennis balls (40 balls) - Used for only 4 hours

Dunlop FORT 40 balls
Price reduction!
¥4000 → ¥3800 (Revised 4/20)

Used on 3/6 and other dates
20 cans worth
Used for 2-4 hours in practice matches
Opened just before the match on the same day
1 can (2 balls) per court
Used for only 4-5 women's doubles matches
Omni court

There are some balls with slight court differences and sand stains, but the balls are not significantly damaged and I believe they can still be used for practice (^ _ ^)

However, the feel of the ball is subjective, so please refrain from purchasing if you are sensitive about such things.