How To Measure Your Penis

STEP 1:

Find your shaft circumference measurement

Wrap a tape measure around the base of your penis while erect. If you do not have a tape measure, use a string to wrap around your penis and mark with a pen where the string intersects.

STEP 2:

Measure your shaft circumference

Take the string off of your penis. Line it up next to a ruler and mark the measurement in inches. This is your base circumference measurement.

STEP 3:

Find your head circumference measurement

Sometimes the penis will be bigger at the penis head than at the base of the shaft. To make sure the cylinder will be comfortable, it is recommended to measure the circumference of the penis head. Wrap another string around the thickest part of the penis head, and mark where the string meets.

STEP 4:

Measure your head circumference

Take the string off of your penis. Line it up next to a ruler and mark the measurement in inches. This is your penis head circumference measurement.

STEP 5:

Find your erect penis length

Our standard cylinders are 9” in length. In order to make sure you have room to grow, we need your erect penis length. Take a ruler, and line it up against your erect penis. Push the ruler a little bit against your stomach (about 1/2 inch). Measure your full length to the top of the penis head. That is your erect penis length.

If you are 7.5 inches long or longer, we recommend purchasing the 12 inch cylinders in place of our standard 9 inch cylinders. This will give you enough room to grow.Our 12 inch cylinders are $30 extra, as they are custom made in small quantities and are not refundable or exchange-able.

STEP 6: HOW TO CHOOSE THE CORRECT SIZE CYLINDER

The cylinder should give you enough room to fully expand your erection. If you are filling up the cylinder, it is time to order the next size up. The cylinder should not limit the size of your erection. The Medium size fits over 80% of men.

Your order includes a 30-Day FREE Size Exchange (shipping cost not included).

  • Up to 5" Circumference

    1.75" (S)

  • 5.10" - 5.50" Circumference

    2.00" (M)

  • 5.51" - 6.25" Circumference

    2.25" (L)

  • 6.26" - 8.00" Circumference

    2.50" (XL)

STEP 7: SELECT YOUR PUMP

  • Dr. Kaplan's electric pump gives you a convenient, hands-free experience. The electric pump does all the work for you, giving you seamless and continuous vacuum pressure that accelerates performance gains.

    ELECTRIC PUMPS 

  • Dr. Kaplan's metal hand pump gives you precise pressure control for optimum safety and comfort. Built to last, this pump is our most popular choice.

    METAL PUMPS 

  • Dr. Kaplan's plastic hand pump gives you precise pressure control for optimum safety and comfort. This pump is light-weight and ergonimically designed.

    STARTER PUMPS 

ALL PUMPS