FEATURES: Aluminum I-Beam frame that is light weight and durable Pre-strung from the manufacturer 19" YOUTH AGE RANGE: Ideal for youth players 2-4 years old FRAME CONSTRUCTION: Aluminum KEY RACQUET SPECS: Length 19"/ Head size 83 sq in. RACQUET WEIGHT: Strung 7. 5 oz 21" YOUTH AGE RANGE : Ideal for youth players 4-6 years old FRAME CONSTRUCTION: Aluminum KEY RACQUET SPEC'S: Length 21"/ Head size 95" RACQUET WEIGHT: Unstrung 7. 6 oz. 23" YOUTH AGE RANGE : Ideal for youth players 6-9 years old FRAME CONSTRUCTION: Aluminum KEY RACQUET SPEC'S: Length 23 "/ Head size 95" RACQUET WEIGHT: Unstrung 7. 8 oz. 25" YOUTH AGE RANGE : Ideal for youth players 9-12 years old FRAME CONSTRUCTION: Aluminum KEY RACQUET SPEC'S: Length 25 "/ Head size 100" RACQUET WEIGHT: Unstrung 8. 5 oz.