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VED is working. I don't see the big deal other than getting cold blood into the penis, that shrinks immediately when the VED suction is removed. I can't imagine how people use this for penetration, based on my results.

Over all it has been very successful for us. There are a few downsides. 1. 30 minutes max before rings must come off. 2. Some discomfort. 3. Kind of awkward to use.
Upsides, 1. Able to have penetrative sex with excellent results. 2. 30 minute limit is easy to work around. 3. Discomfort can be reduced a great deal.4. Wife is extremely pleased with super stiff erection that she doesn't have to work for. No worry it will fade before she cums.

Hi, you have, or most have to use a cock ring with VED,with a cock you can pump up to erection size, with cock ring fitted you beable to keep a good hard erection, well it works well for me.
also a VED is for men with PD, the VED keeps the penis straight when pumped up.

My .02 worth...
I bought a Vacurect pump and it works well! The constriction rings are nice and easy to use. The pump itself limits the amopunt of pressure you can build. Easy one handed operation. Yes they are quite expensive but have a money back program if you don't like it.