ProKennex Q+15 Tennis Racket (Unstrung)ProKennex updates the Ki Q+ 15 with a beautiful blue cosmetic, but keeps the easy power and phenomenal comfort of the previous generation. With its Quadfocus Design, players will notice a very forgiving and stable face with uncommon access to spin for a 105 in2 frame. The extended power zone at the top is peerless, producing penetrating volleys and serves. Its easy power with smooth control from the ground makes the Q+ 15 one of the most versatile