Thank you very much for your follows and repeat purchases. In the unlikely event that you are not satisfied, we offer a refund or exchange within 30 days of receiving the product, even for your convenience. We hope you can purchase with peace of mind. Since items sell out quickly, we are unable to offer discounts. We appreciate your understanding. As a first-time buyer bonus, we are offering an additional ball service. We also have repeat purchase benefits. Please take advantage of this opportunity. These balls were opened in early October and used for about a week on a hard court. The felt has some wear and tear as shown in the images. The air pressure is still somewhat remaining, but it will decrease over time, so these are recommended for service practice or for practice using a lot of balls. We believe these balls can be used by a wide range of people, from children and women to adults, and from beginners to intermediate players. We will respond immediately to immediate purchases. We have about 200 balls in stock. If you purchase a large quantity, we will offer a significant discount, so please contact us before purchasing.