The Yonex Astrox 100 Game 4U5 is a club badminton racket designed for intermediate level of play, capable of producing more power behind each stroke with less effort, a solid pick for players seeking to win games through aggressive style of the game & relentless attacking stance on the courts. The racket features the Nanomesh Neo material to ensure a more efficient flex & higher frame strength, whereas the Aero+ Box frame technology provides a more fluid striking motion, as well as higher striking speed thanks to reduced air drag. The Isometric technology expands the sweet spot to create a more accurate & consistent striking experience, as well as increased power potential. in addition, the Astrox 100 Game takes advantage of the Rotational Generator System to apply the counterbalance theory for rapid repeated shot-making, whereas the Energy Boost Cap offers more control over strokes by preventing frame twisting & providing more stability on shuttle impacts. The Astrox 100 Game comes strung with the D637-A7 string.