There is no cure-all that will solve all your size problems. Build up over time for a maximum time of 10 minutes.
Where you put your wrap is where the clamp is going to go, so you want it as close to the base of your penis as possible. Forever immortalized in Austin Powers, many men turn to it as the be-all to end-all solution to their size problems.
However, when you combine regular, low stress pumping with jelqing and clamping, you can see serious gains.
Naturally, these clamps are hardly the most comfortable things. The idea is a similar to clamping. It works by creating a vacuum usually with air or water around your penis.
In fact, most men are unlikely to see significant gains unless they use their pump in conjunction with other exercises. The fabric side is nice and soft against your penis can the other side is rubbery and grips the clamp exceptionally well.
Together, these techniques improve your ability to get blood to your penis AND increase how much blood it can hold. Now here comes the bad news.
Go to the base of the head and stop. Then, air is pumped out, resulting in negative pressure which makes blood flow into your penis beyond its natural state.
This is exercise after all! Over time, this swelling will actually expand those tissues, giving you a new upper threshold and thus, increasing your size permanently. And for best results, combine with jelqing and pumping. The best way to increase your size is with a variety of techniques used together to simultaneously improve blood flow e.
Essentially, you tie a tight knot at the base of your penis, not unlike a tourniquet.
Flaccid or semi-flaccid is the best way to avoid injury. That said, a pump IS a good way to improve your girth when used with jelqing and clamping.
Make sure you keep your erection and try and do Kegel exercises to keep blood in the penis. Next, put your protective wrap on your penis.