MEGA frame with larger sweet spot for deeper shots. MEGA frame with larger sweet spot for deeper shots. Due to its unique large-frame design, the Mega Frame further enlarges the already large sweet spot provided by the Isometric. Compared with an ordinary racquet, the Mega Frame provides a 34% larger sweet spot for greater reach and more effective off-centre hits. DURA-Frame is installed on the frame of YONEX aluminium racquets. This makes the racquet highly durable and provides solid feeling and face stability.