Do penis rings really help the erection?

Perceptive forum discussions on Cock rings:

Saying names during sex
i've never been much for saying my partner's name during sex. It's just not natural for me. i don't have any particular attachment to or fondness for.

Cock rings - Introducing them to the bedroom...
As well informed as I feel I am about sex toys in general, cock rings are one of those things that has been on a back burner for me. I was curious...

Cock Ring Size issues..
Ok, so we purchased one of the cock ring/mini bullet combo toys few weeks back. hubby and I tried it this past week and found that we need something..

How Many?
How many cock rings have you tried? Which do you like best?

was wondering if others enjoy this
My partner and I tend to do a position for oral that I normally don't hear about personally. We do the 69 position where he is on top and has my legs.

I tried it once, but it didn't help me as an adv telling. I feel some thing hold me and unfree to do what I usually want. My wife also didn't feel any changes.

Using a properly fitted ring that goes around the cock-and-balls, we find them very effective. I can stay harder longer and she notices that I'm larger because she cannot take me as deep in her throat. The changes are not cosmic - they are subtle but real.

I haven't noticed an increase in size, but definitely help the man last longer because blood is being contained in the penis through the tightness of the ring. For first time users, it's good to start with a less tight one and move up to a tighter one after that.