Carbon NanoTube: Increased durability and improved flexibility allows the frame to return back to its original shape faster. The Carbon Nanotubes improve the frames elasticity holding the shuttle on the string bed for enhanced control at the point of impact. Isometric: Developed by Yonex, the Isometric Square Head Shape provides a 32% larger effective hitting area than a conventional racquet. The Isometric Square Head Shape equalizes the length of main and cross strings in the stringbed, enlarging the sweetspot for more consistent accuracy even on off-center hits. Build-in T-Joint: Moulded deep into the layers of graphite where the frame connects with the shaft, the Yonex Built-in T-Joint creates a durable and high-strength one-piece frame that is torque-free. AERO-BOX Frame: The Aero-Box Frame reduces wind drag compared with a standard air-flow pattern, maximizing the power of the swing and the transfer of energy to the shuttlecock. New Grommet Pattern: The new Yonex single-pass grommet hole construction provides more grommet holes at the 2 & 10 o clock position on the frame, creating a high performance stringing pattern that increases durability by 7%. Control Support Cap: The Control Support Cap provides an 88% wider flat surface compared with an ordinary racquet for easier gripping, fast follow-through and the sharpest manoeuvrability.