The Head Auxetic Speed 26 Inch Junior Tennis Racquet is the junior, lightweight version of the MP model in the adult Speed series. Young tennis players who are inspired by Head ambassador Novak Djokovic, who uses an adult Speed racquet, will appreciate how this junior frame is easy to handle, and now also has new Auxetic construction for sensational feel. The Head Auxetic Speed 26 Inch Junior Tennis Racquet also comes with a modern, striking design that is identical to the look of the adult Speed racquets. Features: For ambitious juniors with fast games New Auxetic construction for sensational feel Modern design that is identical to adult Speed racquets Technology: Auxetic - Auxetic constructions show a unique deformation compared to non-Auxetic constructions. Due to their internal properties, Auxetic constructions widen when a “pull” force is applied and contract when squeezed. The bigger the applied force, the bigger the Auxetic reaction. The Head Auxetic Speed 26 Inch Junior Tennis Racquet is built for ambitious kids aged from 9 to 11 who have a fast game.