“I have personally recommended this to men and I have received lots of great feedback regarding its long(er) term use. It’s a hydropump, so it works by using water when you’re in the shower or bathtub. To fully understand this, it’s important to know that the penis has three soft chambers, the corpora cavernosa (two large one’s on the top of the penis) and the Carpus Spongiosum (a smaller one on the bottom of the two). When these two fill with blood, you get an erection. What Bathmate or a penis pump can do is expand these chambers, thereby allowing more blood to fill in."
However, after more than a century of generally dubious and sometimes lunatic penis enlargement attempts, there's still not much you can do. Sure, there are lots and lots of supposed options out there -- penis pills, creams, brutal stretching exercises, horrific-looking devices, and penis surgery. Almost none of it works. The few approaches that can work often have modest benefits and serious side effects. How serious? In some cases, erectile dysfunction-serious.