Recommended for very experienced users, the Vac-U-Lock™ Dual Density Extreme Set offers deeper penetration and more intense feelings of fullness than other complete Vac-U-Lock™ sets, featuring three extra-large dual density ULTRASKYN™ attachments, a complete harness with removable O-rings and plug, and a bottle of Mood water-based lubricant. The attachments measure 26.7 cm, 30.5 cm, and an incredible 39.4 cm, and these dual density attachments warm to body temperature during use and have a soft, flexible exterior that gives way to a firm inner core, mimicking the feel of a real penis.

The attachments can be used with the harness, the included Vac-U-Lock™ suction cup, and Knuckle-Up accessories, as well as any other accessory or harness in the line. The Vac-U-Lock™ Dual Density Extreme Set also includes Doc Johnson® Natural Toy Cleaner and ULTRASKYN™ Refresh Powder to properly and hygienically maintain your dual density ULTRASKYN™ attachments. Each product in the patented Vac-U-Lock™ system is designed to help you create any strap-on or toy you desire, and it's as simple as attaching the attachment of your choice.