JANOME CONCEALED ZIPPER FOOTJANOME FOOT ZIPPER CONCEALED 5MM, 7MM, 9MM AND 1600p MODELS Good quality ready to wear garments will often have an invisible zip fitted. These zippers are often neglected by the home dressmaker which is a pity because they can ensure success every time. Invisible zips are suitable for all fabrics from fine silk jersey through to suit weight wool and tweeds. The key is to get the needle as close to the fastener as possible, which this foot accomplishes