Abstract: A head covering is provided with an adjustable sunshade visor for shielding the wearer's face from sunshine and an inside ventilation means for supplying air to the inside of the head covering to cool the wearer's head in hot days. The head covering includes a frame; a substantially C-shaped rim made of flexible material mounted on the bottom of the frame. A size adjusting belt is joined to the C-shaped rim in such a manner as to form a ring that fits on a wearer's head, the diameter of the ring being adjustable by adjusting the length of the size adjusting belt. A plurality of tubular members having hollowed inside are mounted along and between the outer and inner walls of the C-shaped rim. A double-layer crown-structure including an outer fabric layer and an internal net-like layer is supported on the frame for covering the wearer's head. The outer fabric layer and the internal net-like layer are separated by a gap that serves as an air passage.