The Wilson Tennis Racket Federer Junior 25'' has the following features: This Wilson 23" tennis racket is designed for children of +/- 9 to 11 years old with a body height of at least 140cm. The racket is ultra light and easy to handle. This is an excellent tennis racket for kids who are learning to play tennis. This 25" racket is designed to play tennis with orange, stage 2 tennis balls. Kids can play on a 3/4 tennis court, because the balls are lighter than regular tennis balls, they will have more control and it'll be easier to learn how to play. Specifications: Wilson tennis racket for kids Designed for children of +/- 9 to 11 years old, at least 140cm tall Weight (unstrung): 225gr Head size: 95 inch⊃2; String pattern 16x17 This racket is deliver strung and comes with a matching cover! How do I decide which tennis racket length to choose based on my body height? Stand up straight and hold the tennis racket. Let your arm with the tennis racket relax alongside your body. The tennis racket should reach your ankle, but not touch the ground (+/-5cm). Tags: tennis racket, tennis rackets, tennisracket, tennisrackets, kids tennisracket, kids tennis racket.