PS: Lee Chong Wei broke the world record for the fastest smash of all time in gameplay (408km/h) at the 2015 Hong Kong Open. This was achieved using the Yonex Duora 10!
Duora, short for Duo-Radical, have a unique design, they have a two-sided frame.
Each side of the racket frame is uniquely designed to optimize BOTH your forehand and backhand shots.
The main benefits of the Yonex Duora series are:
Dual Optimal System: Double sided frame to optimize your badminton shots. One side has a box frame for a solid crisp shot; the other side features an aero frame for backhand shots.
Nanometric DR: New carbon material used to increase the toughness of the racket frame. As a result, all Yonex Duora badminton rackets guarantee a higher maximum string tension.
Most Duora badminton rackets are Head Balance with a Stiff to Extra Stiff feeling.