The Cose Nylon Invisible Zipper, 18cm long and in ecru, 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. The ecru tone is a soft alternative to pure white, suitable for dresses and skirts in natural fabrics or ivory tones. The 18cm length, shorter than the 22cm reference, is ideal for smaller openings, such as children's skirts or blouses. It requires a specific invisible zipper foot on the sewing machine, which allows for correct application along the hidden teeth.