Good quality ready-to-wear garments will often have an invisible zipper. These zippers are easily duplicated by the home dressmaker with the Concealed Zipper Foot. Invisible zippers are suitable for all fabrics from fine silk jersey to suit weight wools and tweeds. The key is to get the needle as close to the fastener as possible. This foot accomplishes this by slightly unrolling the zipper just before the needle. Once fitted, a well sewn invisible zipper will merely look like a part of the seam.