Natural alternative known to combat erectile dysfunction and increase sexual performance.
The process of englargement via the vacuum pump is medically referred to as hyperemiation.
Penis pumps were developed to help men with erectile dysfunction achieve and maintain an erection. This is the only medically endorsed use of penis pumps.
Customer Rating: 



Review Summary: Cock ring makes for good times
Review: Perfect size, cuts off circulation just right and allows for kinkier sexing. As a tip I'd suggest you shave, can pull on pubic hair when removing.
Customer Rating: 



Review Summary: Good product, but too small/tight
Review: add at least an inch or two of girth, it was made for 15 year-old boys.
Customer Rating: 



Review Summary: Works like a charm!
Review: I must admit that when I first saw this doodad, I was dubious, it looked way too small. Further, we checked it out in a dry run by slipping it on his penis, which did indeed become rather hard but also purple, and afterward he complained about some post-erection pain. Personally, I would have thrown it away right then and there.
Well, during a recent love-making session in a very hot room, he was afraid that his erection would flag, so he put it on. The results were wonderful! Not only was his erection harder than normal, but his endurance was applaudable (I wanted to cheer!), and he reported that his orgasm was more intense than normal.
Now, we haven't had this thing too long, so I cannot guarantee that this will happen every time. However, so far, so great! If things change, I will edit this review accordingly. As for now, though, we highly recommend it.
(Review of Black Beaded Silicone Male Ring Erection Aid 3 Pack)