A pump is perhaps the best type of penis enlargement device you can get. It does it all: length, girth, erection quality, and even sensitivity restoration. Before you get started with pumping, you'll need to ensure you're getting one that fits correctly. Too small, and you either won't fit or you'll grow out of it too quickly. Too large, and the fit will be poor- and you may risk getting your scrotum or testes sucked into the cylinder- which is a painful experience! Now, you can eliminate all doubts about sizing your pump by using our Cylinder Sizing Calculator! The Cylinder Sizing Calculator will give you the optimal starting size for your cylinder using your length and girth measurements. It's very easy to use, and we'll perform the calculations for you. If you require additional assistance for pumping and training, please contact one of our Male Enhancement Coaches today.