The Cose 22cm black invisible nylon zipper is a pre-assembled zipper with a slider included. Its teeth are hidden behind the tape after application, leaving only a discreet stitching line visible. It's the most commonly used type of zipper for dresses, skirts, and blouses in more elegant clothing, where a clean finish without the zipper being visible is desired. Black is one of the most versatile colors, suitable for dresses and skirts of any style, from casual to formal. The 22cm length is ideal for skirts and dresses with a short opening. It requires a specific invisible zipper foot on the sewing machine, which allows for correct application along the hidden teeth.