Mizuno’s Speed Flex 9.1 badminton Racket is perfect for advance level players. With an even balance, the Racket weighs just 83 grams and has a stringing capacity of 30 lbs. Slim Aerodynamic Frame: Slim Aerodynamic Frame profile significantly reduces the amount of drag and maximizes Racket head speed impact. Tapered Shaft: A revolutionary shaft construction of Mizuno Speedlfix 9.1 Badminton Racket, it is tapered down from 7.5mm at the top cap to 6.5mm at the T-Joint, allowing great flex on impact, minimizing shock to the wrist and has twice the force of restoration than the average shaft, resulting in superior resiliency, generating higher repulsion power and shuttlecock return speed. Hot Melt Tech: The graphite sheets are heated at a higher temperature further to eliminate the impurities during the initial manufacturing process. This results in a smoother, more consistent coating that not only strengthens the frame but enhances the aerodynamics of the graphite, thus increasing the Mizuno Speedlfex 9.1 Badminton Racket’s velocity. About Mizuno: Mizuno badminton rackets are considered one of the best in the industry. They are often used by players who are looking for a lightweight racket that has good balance and performance. They have a traditional handle, a graphite shaft, and a lightweight aluminium frame.