Our high-quality concealed invisible zip is a special type of zipper that is used in garments and other items where a traditional zipper would be visible. Repetitive use does not cause the zipper to break or become stuck. The slider glides past the teeth without getting stuck or snagged. The fabric can be held together by its teeth without breaking or separating. Even with one hand, zipping up and down is a breeze. The fabric on which the zipper is being used is compatible with it. For the item it is being used on, the zipper size should be suitable.