US Patent 7117542 Headwear and sweatband with stretch stitch line

The present invention discloses a headwear having a crown adapted to cover the top of a wearer's head, and a brim formed in a predetermined shape at the lower peripheral edge of the crown, and a rim formed along the inner peripheral surface of the lower peripheral edge of the crown, wherein the rim is made of an expandable spandex material and has a sewing line formed in a zigzag way along a portion where the upper and lower portions of the rim are folded to meet with each other so that the sewing line is strechable, the rim being sewn along the inner peripheral surface of the lower peripheral edge of the crown at the lower portion thereof.