At the heart of the inner o-ring are rubber bands and tape. The rubber bands are very small. These were found at Wal-mart in the hair care section and the smallest is about the size used for braces on teeth.

As shown, pull back skin somewhat and put the rubber bands on penis. Only one is really needed but I have enough skin so I use two. Put the smallest rubber band towards the pubic area. This will give the FS a more natural look. Put tape around penis being sure to include all rubber bands and not making the tape to tight. If the tape is to tight it will be difficult to get the glans through the tape ring. For demonstration purposes I used 3M Transpore but 3M Healthcare foam tape is water proof, more comfortable and flexible. This method can be worn to the gym because it is much less noticeable. In the first picture above, the stiffness of the Transpore tape has made the skin tube more ridged.

Put the finger tip from one hand on your glans. With the other hand grab the tape ring and pull the ring over your glans while pushing glans toward pubic bone. You are turning the tape ring with your skin "inside out". It does take practice. But is very comfortable.

Work the tape with finger so that the tape is open for urinating. Make sure your pee hole is not covered with the tape. Make a ball out of facial tissue to absorb any leaking fluids. Use facial tissue, toilet tissue is meant to dissolve in liquid.

This inner o-ring is made by cutting a slice out of a bicycle inner tube. Inner tubes come in different sizes, don't get one that is too tight because your glans won't slip through to make the inner o-ring. Then wider the strip the more the FS will go out over the glans giving more skin stretch, but, the harder it will be to roll the tube inside-out over your glans.

To get the tube on turn it inside out then use the first two fingers of both hands to stretch to tube. Then slide it over your glans and release. Adjust the FS in and around the tube so the skin between corona and tube is smooth and even and apply tape to cover tubing. Make sure that some of the tape is on the skin (1/4" or so) on the pubic side. Don't tape too tight, remember that your corona must be able to fit through the tube. Adding a small rubber band at edge of tube nearest pubic will close the end of the FS tube to look more like being uncut.

It takes some practice but push your glans through the tubing and at the same time take the edge of the tube nearest pubic hair and pull it over your glans remembering to turn it inside out. It also works to push glans through then roll the tubing over but sometimes the tape doesn't hold up through transition.

The end view shows the depth of the skin tube using the inner o-ring. Had I used a rubber band in conjunction the bicycle tubing the opening would be smaller and more natural looking.

Long time restorers and those with lots of frenulum skin already may want to focus on top skin only. This is done by cutting the bicycle inner tube as shown. It has to be thin at the bottom or you will never get it over your glans.

Nocturnal erections make a lot of techniques unsafe. The inner o-ring is safe at night. Men ask "won't it strangle my penis when I get erect"? What happens is as the glans swells it actually makes the bond between tape and FS tighter as more pressure is applied. If there is a failure, it is at the P.O.E. and the tape comes of and releases the rubber band/bands. Go back to the top photos and you can see the rubber band at the P.O.E.. It is a good idea to make the inner o-ring and give yourself an erection several times to actually see for yourself what happens. Some guys report having masturbated with the inner o-ring on, try that with another techniques and you'll get skin tears.