70 yellow DUNLOP FORT tennis balls. Numbers are written on the balls for dynamic visual acuity training. They can be used as regular used balls, but are offered at a low price. - Brand: DUNLOP - Model: FORT - Quantity: Many - Color: Yellow - Condition: Numbers are written on them. Thank you for viewing. The condition varies, but the frequency of use was about 2 hours in a match format, then about 15 minutes once or twice a week for warm-ups for about 1 to 2 months. Most of them were opened from July to October of this year. *Last year's balls have already been sold, so these are only from this year.* For 100 balls or more, they will be shipped in a carrying plastic bag, making them easy and convenient to carry and store. Cardboard boxes are difficult to carry. Besides tennis, they can be reused for various purposes such as crafts, batting practice, massage, and dog toys. These were used outdoors, and I have cleaned them as much as possible with a vacuum cleaner, but please consider the photos if you are concerned. Type: Hard court