Recommended for very experienced players only, the Vac-U-Lock Dual Density Extreme Set offers deeper penetration and more intense feelings of fullness than any other complete Vac-U-Lock. It consists of three extra-large attachments in dual density ULTRASKYN, a complete harness with removable o-rings and plug, a bottle of Mood water-based lube, and more. Measuring 10.5 inches, 12 inches, and an incredible 15.5 inches, these dual density attachments warm to body temperature with use and feature a soft, pliable exterior that gives way to a firm inner core, recreating the feel of a real erect penis.