This e-Book shows four variations for the design for a Bust Sling Bra based on the patterns created in Volume 1 and Volume 2. The designs include a Hybrid variation that adds a conventional bra's rib cage band. This optimizes the position of the Bust Sling in front and provides support for soft tissue "fluff" on the side of the body. The Racerback provides support across a wide portion of the back. The zipper front style allows for an easy opening front. And the Nursing Bust Sling Bra addresses the issues described on the web page Nursing Bras .