Abstract: A golf club including an elongated shaft and a head connected toward one end of the shaft is disclosed. The golf head has a striking face and a rear side opposite to the striking face. To enhance its aerodynamics, the golf club head defines at least one air flow passage extending therethrough. More specifically, the air passage in the golf club head has an inlet, opening to the striking face, and an outlet, opening to the rear side of the head. Moreover, the golf club head defines a closed margin for such air passage, and wherein the closed margin of the air passage defined by the golf club head has a continuous decreasing taper between the inlet and outlet ends thereof.