An invisible zipper is a type of zipper that is designed to be hidden from view when it is closed. This type of zipper is often used in garments, such as dresses, skirts, and pants, where a visible zipper would be undesirable.
Invisible zippers are typically made of a fine, lightweight material, such as nylon or polyester. The teeth of the zipper are also very small, which helps to make the zipper less visible. Invisible zippers are available in a variety of colors, so they can be matched to the fabric of the garment.