The Babolat B`Fly 21 Junior Tennis Racquet is sized for juniors aged from 7 to 9 years old. The B`Fly 21 weighs 6.9 ounces, spans 21` in length, and features a cute and colorful design. This junior racquet is constructed with Memo Grip, which provides a visual reference for children to remember proper hand positions and is a convenient way for students to learn. Recommended to use with red beginner tennis balls.