Abstract: A hat including a crown with a base. An outer headband layer is affixed to the crown at the base by a base seam that extends around a circumference of the crown. an inner headband layer is affixed to the outer headband layer at a position opposite the base to define a circumferential pocket between the outer headband layer and the inner headband layer. A rail has a T-shaped cross section disposed in the pocket. The T-shaped cross section is defined by a stem and an arm. The rail is affixed to the outer headband layer and the inner headband layer by a first rail seam through the stem, the outer headband layer, and the inner headband layer. The rail is further affixed to the outer headband layer by a second rail seam only through the outer headband layer and the stem. A bill has a track with a figure four shaped cross section affixed thereon. The track has a channel that receives and retains the rail therein to guide the bill around the crown.

Abstract: A hat including a crown with a base. An outer headband layer is affixed to the crown at the base by a base seam that extends around a circumference of the crown. an inner headband layer is affixed to the outer headband layer at a position opposite the base to define a circumferential pocket between the outer headband layer and the inner headband layer. A rail has a T-shaped cross section disposed in the pocket. The T-shaped cross section is defined by a stem and an arm. The rail is affixed to the outer headband layer and the inner headband layer by a first rail seam through the stem, the outer headband layer, and the inner headband layer. The rail is further affixed to the outer headband layer by a second rail seam only through the outer headband layer and the stem. A bill has a track with a figure four shaped cross section affixed thereon. The track has a channel that receives and retains the rail therein to guide the bill around the crown.

Abstract: Provided is a baseball cap-type headwear in which a peak is provided in a front lower end of a head circumferential portion and a crown is connected to an upper end of the head circumferential portion, in which a front portion of the head circumferential portion is formed as an inclined surface that widens in an outward direction of the headwear as the inclined surface advances toward a lower end, a void is formed between the peak and the head circumferential portion, and the central portion of one end of the peak is positioned on an inner side of the headwear more than the front lower end of the head circumferential portion, and at least the front portion of the head circumferential portion and the peak are integrally molded from a synthetic resin.

Abstract: Headwear such as a hat, cap, or visor with a headband and a brim extending outwardly therefrom includes a crescent shaped opening defined by an inner portion of the brim and an external leading edge of the headband. Beyond the opening the opaque brim extends away from the headband to an outward tip, and to lateral side edges. The opaque brim is attached at its lateral edges directly to the external leading edge of the headband. The crescent shaped opening allows more flow at a central area of the brim, yet it narrows toward lateral edges of the brim to ensure that sunlight toward the wearer's sides is adequately blocked from eye contact. This novel structure provides maximum shading of the wearer's face, yet directs considerable airflow from beneath and above the brim through the opening to cool the wearer's eccrine glands along the forehead.

Abstract: Headwear in the form, for example, of a baseball cap (1) is provided in its front portion (4) with an inlet aperture (20) with which is associated a baffle (22) whereby in use on the wearer's head, midly turbulent air flow is induced into the cap space (10) by virtue of the baffle (22) thereby to create a cooling effect upon the wearer's head (8).