Scientifically developed by European urologists to dramatically increase penis size and performance&#44; the Potent Developer will give you the size and confidence you've always dreamt about without any harmful side effects. Each squeeze of the medical-style pump ball&#44; your pleasure rod will swell with power. <p>Some men swear by the use of pumps as effective tools for increasing size while others think pumps have no lasting effect. Pumps can extend length while using&#44; but the question is&#44; will the penis return to original size after using? Unfortunately we do not have that answer and can not guarantee or be responsible for any results.</p>