This system is worth the money especially if you are rough with your strap-ons like I am! Don't waist your money with cheaper systems. This is the way to go.
The most helpful critical review
Changing Sizes is Possible, if You Don’t Need Any Action
The Ultra Harness 3000 is a great concept that fails to function. Save your money and purchase a higher quality harness that will enable you to find pleasurer as the wearer and really provide quality action to the recipient of your cock.
Securely strap on your buckled leather harness then attach any of a selection of dildoes. (Purchased separately) This harness has an adjustable waist up to 44 inches, an open crotch for maximum comfort, easy access, and non-slip action; all designed to give you command and control for your erotic pleasures. The Vac-u-Lock plugs attach with velcro or snaps. Also has convenient controller pouch built in. This Harness can be used by women or men. The opening under the plug is high enough to allow the man's penis to hang below or snap on another plug.