The YONEX Muscle Power 33 light is another edition of the Muscle Power series. The Muscle Power 33 Light locates the string on the rounded archways, eliminating stress load and fatigue through contact friction. This construction creates total unity of the string and frame through closer and tighter contact. The Muscle Power series, with its unique frame construction, integrates the frame and the string like no other. The series is designed for players who go after fast movement and effortless power. About YONEX: YONEX manufactures badminton racquets and other sports equipment. The company has been in business since 1968 and is known for its superior quality and attention to detail. Is Yonex muscle power for beginners? Yonex Muscle Power 33 Light is an excellent racquet for professional badminton players at the beginner to intermediate level.