Penis extenders are believed to be one of the most effective methods for truly adding length to the penis. Studies have shown that they could be effective and safe and that the addition in size is maintained even after the participants have stopped using them. However, caution should be exercised in choosing your own penis extender.

Finding a device that has been clinically tested

It is important to select a penis extender that is endorsed by doctors, since this had undergone clinical studies to prove its effectiveness and safety. Not all penis extenders that are available in the market have this distinction. Choosing an untested device is not just a waste of money, but it may also have serious effects on the penis. In addition to this, it is not advisable to use a homemade device because it has not been properly tested.

Choosing a penis extender that is comfortable and has a warranty

If the device is not comfortable to wear, it is not likely that you would want to use it for at least four hours a day. You may find that it is difficult to be inconspicuous about it while you are wearing it in public if it is not comfortable. Moreover, if it is not properly designed for comfort, it may cause bruises and cuts that may later have unwanted medical consequences. And because it has to be worn for at least six months, its warranty should be at least that long.

Finding a device that indicates the amount of tensile stress

This is very important because applying too much tension to the penis may cause serious injuries. On the other hand, if the amount of tension is too small, the penis extender might not have any effect on penis size.