DETAILS: HEAD's junior racquet series helps kids to get started on their exciting tennis journey Made of an aluminum o-beam construction, the Speed 23 is great for kids just getting into the game who are 6 and older and 45-49 inches in height Pre-strung MEASUREMENTS: WEIGHT (UNSTRUNG): 215 g / 7.6 oz STRING PATTERN: 16/18 HEAD SIZE: 630 cm^2 / 98 in^2 GRIP SIZE: 000, 0000 BALANCE: 280 mm / 0.5 in HL LENGTH: 585 mm / 23 in BEAM: 20 mm AGE: 6+