Vac-U-Lock by Doc Johnson

Created by Doc Johnson, the unique Vac-U-Lock technology offers a more secure strap-on system. While most strap-on harnesses hold dildos in place via an O-ring, this system instead used a suction plug to secure the attachment to the harness. A little plug-like piece is attached to every Vac-U-Lock harness and can fit any Vac-U-Lock attachment as they are all interchangeable within its own system!