Soft tennis balls, red and yellow, set of 12. Red balls → AKAEMU official balls Yellow balls → KENKO official balls Thank you for viewing. Usage: Soft tennis These are used items that are no longer needed for practice, but they are still usable balls. All are official balls. How about these for those considering using color balls, such as for night games? Shipping the items will cost about 750 yen, so please refrain from price reductions.