| 摘要 |
The hat crown has a lower periphery, an outside and inside, a horizontal brim and a headband placed radially inward from the crown's interior. A sliding assembly has one member fixed to the crown's inside and a second slidably attached to the first as a extension to the brim. The brim may then be rotated along the crown. The crown's material includes a fold folded inward to form a finished edge along the lower periphery. The fold, securely attached to the main portion, forms an upper edge. The first member has a flat base fixed to the fold or arranged at the flap's top and connected directly to the crown in any suitable way. If the crown is seamed, the headband can be tacked on or near the seam lines. The headband may also surround the lower periphery incompletely so as to create a gap with two edges, an elastic band separating them and stretching to adapt to the wearer's head.
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