The Head(R) Junior Speed 25 Tennis Racquet is perfect for younger players, finding their niche in the sport. The racquet is best suited for kids 8 and older, featuring an aluminum o-beam construction. Junior Tennis Aluminum o-beam construction Best suited for players 50-55 inches in height Pre-strung Additional Details WEIGHT (UNSTRUNG): 240 g / 8.5 oz STRING PATTERN: 16/18 HEAD SIZE: 680 cm^2 / 105 in^2 BALANCE: 305 mm / 0.5 in HL LENGTH: 635 mm / 25 in BEAM: 20 mm AGE: 8+