The Wilson Ultra 25 V4, a junior frame ideal for 9 to 10-year-old tennis players with significant goals on the court, you can swing with effortless, comfortable power. With a grommet system that compresses upon impact for additional ball dwell time and responsiveness, this racket, which has a rich design and dynamic performance inspired by the adult Ultra V4 range, inspires confidence. Wilson Sensation string is pre-strung on the racket for an enticing combination of playability and arm-friendliness.