The Wilson Ultra 25 Inch v4 Junior Tennis Racquet is 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. Racquet comes pre-strung with Wilson Sensation string for an appealing blend of arm-friendly comfort and playability.Features:Crush Zone - Innovative grommet system compresses at impact to provide a larger hotspot and increased ball dwell time on the strings, creating better feel and more potential energy that drives explosive powerParallel Drilling - Grommet construction provides a consistent, more forgiving string bed response while dramatically increasing the sweet spotAgiplast - Plant-based bumper, grommet and end cap components reduce overall environmental footprintThe Wilson Ultra 25 Inch v4 Junior Tennis Racquet is recommended for ages 9-10.