PosTVac Mach Ring, A141, Size 5 Small Inside Diameter 6.5 mm (.25 inches)

Easy to use very confrontable.

I liked everything about the tension rings. They fit over the penis pump and when pumping causes an erection the stretchy ring is slid off the pump and onto the penis. When the pump is removed the rings hold the penis snugly to maintain your erection. There is no discomfort whatsoever, it is a rather enjoyable feeling. It also enables you to enjoy entended periods of love making. You can contact me if you want any further information on this excellent product. [email protected] GSydney Australia

This opening is about the size of a pencil and I can’t believe anyone could get it on,so worthless and in addition once you open the pack ,you can return it as you can’t see the size .no way can I slip that on my penis pump.this is a small one and the large is only twice the sizeIf anyone actually used this lets us all know your secret

Wish I had gotten the next size up. A little pricy, can't return once package is open.

As expected a good product.

Works as you would want it to.However it didn't last through 5 uses.Way too expensive for almost 5 uses

This works very well for my fiancé.

Good product