Thank you for viewing. This is a quiet-type basketball (size 7). Made of polyurethane material, it produces little noise when dribbling, allowing you to practice without disturbing others at night or indoors. As it is size 7, you can practice with a feel close to the official adult size, making it ideal for training for students in club activities and working adults. Also, because it is quiet and easy to handle, it is also recommended for children's basic practice and dribbling practice. Easy to use in environments where noise is a concern, such as apartments and condominiums, and you can practice at home regardless of the weather. This item is recommended for parent-child practice and as a gift. Size...7