The Vac-U-Lock system used in the Ultra Harness 2000 range is very high quality, well known and easy to use. A small red plug with a wide square base protrudes through the hole in the front of the genuine leather harness, and the base holds the plug securely in place. The plug is specially shaped and fits snugly into the strap-on dong, which means that when females use the Ultra Harness 2000, the dong is fully supported and provides a much more satisfying experience. The dong attachment is very realistic in look and shape, and simply plugs onto the harness snugly and securely. In addition to the dong, the harness also has removable vaginal and anal plugs that sit securely in the harness. The Ultra Harness 2000 Female comes with a harness, plug, solid dong attachment, and a special powder to keep the dong feeling new. Made by Doc Johnson.