An invisible zipper, also known as a concealed zipper, is a type of zipper that is designed to be hidden from view when the garment is closed. It is commonly used in clothing, such as dresses, skirts, and pants, where a visible zipper would be undesirable. Invisible zippers are sewn into a seam allowance, making them virtually undetectable and creating a clean, finished look.
They are more time-consuming to sew than regular zippers, but they provide a more polished and professional finish. Invisible zippers are available in a variety of lengths and colors to match the fabric and style of the garment.