Apacs Feather Weight 200 Badminton Racket (7u) Isomectric head frame - Equalizes the length of main and cross strings in the stringbed, enlarging the sweet-spot for more consistent accuracy even on off-center hits. High Speed Frame - The High Speed Frame design is an aerodynamic shape frame designed to reduce drag on the frame during straight on swing or hit. Resulting in a fast swing-through and the quicker maneuverability. Reinforced Structure Frame - The new material is adopted in the frame in order to make the frame Ultra high Strength & Stiffness. As a result it can handle string tension of up to 33lbs. Super Light Weight - The Super Light Weight body creates an extremely fast racket and is developed to suit players who wants more speed, fast swing-through and the quicker maneuverability.