Wilson Pro Staff Precision Junior 25 3 7/8 WR117910H Wilson tennis racket is recommended for children playing recreational and occasionally. The model is stable and dynamic and does not cause major problems with performing correct strokes ia. The oval C-Beam frame section provides more energy to strikes and improves stability. AirLite Alloy technology creates a lightweight and durable construction. AirLite Bumper technology provides lightweight protection to the racket head. Perimeter Weighting System technology reinforces frame at 3 and 9 o'clock increases stability. The racket is included a 3/4 fastened cover with adjustable shoulder strap. Technical data:· Age: 9-10 years or height 137-150 cm· Handle size: L0 (3 7/8 inches)· Material: aluminium· Wa racket weight (without string): 210 g· racket length: 63.5 cm - 25”· String arrangement: 16x17 in· Balance: 32 cm · Head surface: 613 cm²· Grip: factory· Factory string: yes· Cover 3/4 included: yes