【High-Quality Tennis Balls】 DUNLOP FORT tennis balls are durable and offer excellent performance. They are widely used by players from professionals to amateurs. 【Perfect for Play】 These balls are ideal for play on the court, providing accurate bounce and excellent spin. They are suitable for both practice and matches. 【Large Quantity】 A set of 40 balls is included, allowing for extended practice sessions and matches. They are also perfect for use by teams and clubs. 【Usage Frequency】 I have been using these balls for about a month, opening a new can on weekends and using them for 3-4 hours for matches and practice. There may be slight differences in air pressure between the balls, and some have marks or indicators to distinguish them from others. However, the logos are mostly intact and the balls are in beautiful condition. They are still in great shape and can be used for practice, etc. - Brand: DUNLOP - Model: FORT - Quantity: 40 - Color: Yellow - Material: Rubber Thank you for viewing.