Yonex Badminton Racquet Voltric 20i (Strung)Description: The aero box frame helps minimizing air resistance so air flows faster across the curved surface during the swing, accelerating head speed and transferring more speed and power into hits. Technologies Isometric; Aero box Frame; Built in T joint; Control Support Cap. Highlights: The square shaped ISOMETRIC frame shape is designed to keep vertical strings at a similar length, as well as the horizontal strings to produce an expanded sweet