Ultra 25 v4, a junior frame perfect for young players with serious ambitions on the tennis court. Featuring rich design and dynamic performance inspired by the adult Ultra v4 line, this racquet spurs confidence with a grommet system that compresses upon impact for extra ball dwell time and responsiveness. The Ultra 25 v4 comes pre-strung with Wilson Sensation string for an appealing blend of arm-friendly comfort and playability.