This fancy leather strap-on assembly comes in both male and female versions. Being that the unit is fully modular, the main difference is that the male harness comes with an optional butt-plug and a very small snap-around cock-hole, while the gal belt has an additional, more petite plug. The realistic rubbery cock fits onto the apparatus via the patented Vac-u-lock system, a reddish plastic ribbed piece permanently anchored to the leather harness which accepts a variety of other Doc Johnson Vac-u-lock dong products. Sturdy construction ensures years of use, and Vac-u-lock patented technology makes users feel oh-so-space age.