I'm 71, Diabetic for 11 years. Using insulin for 7 years. Moderate ED. Using Cialis for 10 years mainly to assist.
Recently started experimenting with penis rings. Initially I purchased a vibrator ring combo for the wife and mines pleasure. She prefers her own vibrator for our sessions. The ring was too restrictive for me. Actually hurt
I then purchased a simple ring set with six different sizes. Big win. I'm using the second largest with good results. Much more comfortable and wife says "whoa, you are bigger." Orgasms are still a bit delayed but able to finish with the looser ring and maintain hard longer. All in all a nice thing the slightly snug ring.
Amazon.