Wilson Ultra Power Junior 21 3 1/2 WR118910H Head children's racket is good for recreational tennis games. AirLite Alloy technology creates a lightweight and durable construction. AirLite technology Bumper provides light protection for the racket head. Shock Sleeves technology reduces string vibration. C-Beam oval frame section provides more energy to strikes and improves stability. Aluminum construction. Included with racquet zono fastened cover 3/4 with adjustable strap. Technical data: Age: 5/6 years or height 104-117 cm Handle size: L0 (3 1/2) Material: aluminium Racket weight (without string): 178 g Racket length y: 53.3 cm - 21”· String arrangement: 16x16 in· Balance: 24.5 cm · Head surface: 581 cm² / 90 in²· Wrapping: factory· Factory tension: yes· Case 3/4 included: yes