Your perfect strap-on experience is assured with Doc Johnson's deluxe line of full-service Vac-U-Lock? Harness Kits. The Vac-U-Lock? Dual Density Starter Set provides a fun and innovative introduction to strap-on sex with a complete harness with removable O-rings and plugs, three medium ULTRASKYN? Attachments and a bottle of Mood water-based lube. These dual-density attachments heat to body temperature during use and feature a soft, pliable exterior that gives way to a firm inner core, recreating the feel of a real erect penis. Start your exploration with the pleasurable ridges and plush balls of the 5.5-inch textured tail, or go a little deeper with the 6-inch spiral dong. For the strongest and most lifelike sensation, choose the realistic proportions, contours and vein detail of the 7-inch thin dong. Attachments can be used with the harness, the included Vac-U-Lock? Suction Cup, and any other in-line accessories or harnesses. The Vac-U-Lock? Dual Density Starter Set also includes Doc Johnson® Natural Toy Cleaner and ULTRASKYN? Refresh Powder to properly and hygienically maintain your ULTRASKYN? dual density? Attachments. Each product in the patented Vac-U-Lock? System is designed so you can make any strap-on or toy you want. It's as simple as slipping it onto the attachment of your choice.