Slam 25 Tennis Racket 25Wilson Slam 25 Boys Tennis Racket 25 The Wilson SLAM JUNIOR 25 recreational junior tennis racket is suitable for boys aged 9 10 years. Made from aluminium, the racket is sturdy and resistant to impacts. With strings, it weighs only 220 g, making it easy on young players wrists. Thanks to the C Beam frame technology, this racket is stable and easy to handle. great racket for beginners aged 9 10 years very lightweight and durable C Beam technology