Abstract: An angle-adjustable sun cap includes a band unit, a visor unit attached to the band unit to be rotatable on the band unit, and a cap side coupling device that couples the band unit and the visor unit, in which the cap side coupling device includes an inner coupler and an outer coupler. With the cap side coupling device, the angle between the band unit and the visor unit may be adjusted and the band unit and the visor unit may be correctly fixed at the adjusted angle.

Abstract: A hair band-UV protection sun visor includes an outer band and an inner band, a visor unit coupled to the band unit to be rotatable on the band unit, and a cap side coupling device that couples the band unit and the visor unit. The cap side coupling device includes a circular coupler and a latch coupler, the circular coupler is fixedly coupled to the visor unit and the latch coupler is fixedly coupled to the band unit, and the circular coupler visor unit is rotated or fixed on the latch coupler band unit.

Abstract: An angle-adjustable sun cap includes a band unit, a visor unit attached to the band unit to be rotatable on the band unit, and a cap side coupling device that couples the band unit and the visor unit, in which the cap side coupling device includes an inner coupler and an outer coupler. With the cap side coupling device, the angle between the band unit and the visor unit may be adjusted and the band unit and the visor unit may be correctly fixed at the adjusted angle.

Abstract: An elongate sweatband material for incorporation into a headwear piece and having a length. Thread is knitted to define interengaged U-shaped loops that: a) have a width that is enlarged to permit elongation of the sweatband in a lengthwise direction a first amount under a tensile force of a first magnitude applied in a direction parallel to the length of the sweatband material; and b) cooperate to reinforce each other in a direction transversely to the lengthwise direction so that the sweatband stretches transversely to the lengthwise direction a second amount that is substantially less than the first amount under a tensile force of the first magnitude applied in a direction transversely to the length of the sweatband material.

Abstract: A headwear piece having a crown with a plurality of gores, including first and second gores, that are joined at a connecting line at a first circumferential location on the crown. The gores cooperatively produce an inverted, cup-shaped receptacle into which a user's head can be directed. The crown has a bottom portion that extends at least partially around a wearer's head to embrace the wearer's head. A sweatband on the crown engages a wearer's head. The first and second gores are stretchable circumferentially away from the connecting line to thereby increase the diameter of the crown. The sweatband has a portion that is locally non-stretchable at the first circumferential location so that the sweatband and first and second gores are circumferentially stretchable together away from the first circumferential location in response to the direction of a user's head, with at least a predetermined effective diameter, into the receptacle.