Selecting the correct size of the pump is crucial for both comfort and safety. A pump that is too small can restrict blood flow, while a pump that is too large may not create the necessary vacuum.
For 80% of men — because penis size is a bell curve with the average penis being about 5”- 6” (12.7–15.2 cm) — a cylinder with a 2" (5.1 cm) opening diameter is likely the starter size. There is also a 1 3/4” (4.4 cm) cylinder for those at the smaller end of the range, or 2.25” (5.7 cm) if you’re already packing.
You can measure yourself, or you can just use your common sense. Most of you will know if you have a big, average, or below average penis size. When in doubt or just in between sizes, choose the biggest one.
We also offer a 30-day easy return policy: if the cylinder isn’t the right fit, simply return it, and we’ll send you the perfect size that does.