Most are adjustable for girth. Google discount sex toys & you'll find many sites that offer dozens of varieties. Get one that's adjustable, and that's not unwieldy or awkward for sex. A thick rubber band will work almost as well.  LOL  BTW, you do have a mild case of erectile dysfunction. Lose weight, exercise, and get some ED pill too.

Lots of men and women here all with a lot of sexual and physical experience so I thought I'd ask for an opinion.

I am looking for a cock ring to help me keep an erection. I don't know if I have ED but I'm 33 now, a little over weight, out of shape, and stressed, so it's hard to keep a hard dick. I'm married as well so sex is not as exciting as it once was but I still love my wife and enjoy sex with her.

So, what do you guys and girls suggest for a cock ring?
I tried a Screaming O, it sucked. Didn't feel like much and didn't keep me hard enough. I measured myself and I'm average in length and girth. I'm not looking for something "For Her" as far as rings go, she is pleased enough (her words, not mine) and we're more interested in something that will keep me hard and maybe even help me cum, not prevent it like most toys.

So, suggestions?

Thank you.

Cock rings have had the opposite effect on me. I suggest some ED medication doctors are usually willing to prescribe it to you, and if you have insurance even better because for me its like $22 a pill. Worth it to keep your erection from the time your cock leaves her mouth, putting on the rubber, and making penetration.

Try a leather strap with 4 or 5 snaps.  You can figure out where to snap it to keep your bone nice and hard and then when you start dropping your load you can rip the snaps open and really let the jizz flow.  Washes up nice with saddle soap if it starts getting to musky.

I found also that while rings help its not always enough. Went to my doctor found out I have type 2 diabetes, that finding out early I was able to get under control with diet and losing weight. Once the doctor knew what was wrong had no problem giving me an ED drug to try. ED can be the early signs of more major problems so seeing a doctor is always a good choice. If I had stayed with the cock ring I might not have found out about my diabetes until the problem was much worse. If its not medically related the doctor can still give you all your options but at your age I would be more concerned as to cause then the simple solutions.

I brought this up to a urologist this week and he blew me off. Been tested for Diabetes in the last month, was fine but still....

Vacuum pumps that are prescribed for post op recovery after radical prostatectomy come with silicone cock rings in different sizes, also called constriction rings  They really work to prevent blood from draining out of the erection. Many also have two rings on the side for getting them off. Start by looking on the Mayo clinic web site.  

Sex shops are pretty useless in this regard.  I wanted to get a couple of back-up rings in my size, and they knew nothing about them.  Had to get them through medical supplier.  

You need a new doctor.

Have tried several types, single rings, vibrating, rope type, etc.
I find the single circular type ring works the best to keep erect and also allow ejeculation.
Try a silicon ring with steel balls imbeded in the silicon/
Partner likes the soft type with nubs at top as it does have clit stimulation, the ones with vibrator bullets are a lot of trouble and the big bullets cause discomfort on partner when hard thristing