1 complete looking for couples for that world's only Modular Sex System. Vac-U-Lock Modular System Ultra Harness 2 & Plug with 8" Dong Set 3 black vinyl harness with red Vac-U-Lock plug which you can use using the 8 inch vinyl rubber dong that is included with it. Safely strap in your nylon harness then attach any one of an array of dildos. This harness comes with an adjustable waist as much as 53 inches, a wide open crotch for optimum comfort, quick access, and non-slip action. Designed to provide you with command and control for the erotic pleasures. Vac-U-Lock plugs attach with Velcro or snaps. Set 3 includes: 8 inches dong, harness, powder lubricant, plug. Phthalate free, non-toxic materials: Sil-A-Gel, PVC dong, Abs plastic, fiberglass plug. Vac-U-Lock Harness, Strap-On System, Full Back, Open Crotch, Snap-On Plug with 8 inches realistic cock. Details: Dimensions 8.40 inches Length, 1.80 inches Width, 4.40 inches Depth. Insertable Length 7.50 inches. Waist Size-up to 53 inches. Ultra Harness is really a registered trademark for Doc Manley Novelties. New image added May 22, 2013