Helping you with phimosis, frenulum breve, tight foreskin, and other male health issues.

Stretch #4: The Flesh Tunnel Stretch

Target: Phimotic Ring

The Flesh Tunnel Stretch is like the Finger-Wedge Stretch except that you will insert something called a silicone “flesh tunnel” into the opening of your foreskin instead of your finger.

This way, you can insert the flesh tunnel in the morning and it will stretch your foreskin while you go about your day. Flesh tunnels have grooved edges to prevent them from falling out of your skin. You could even wrap a loose layer of tape around the tip of your foreskin and the flesh tunnel if you have an issue with the tunnel falling out during the day.

Flesh tunnels are commonly used in body piercings to expand a piercing over time. The same exact mechanics will also work for your foreskin opening.

Flesh tunnels are used to stretch skin by design.

Size progression

Another good thing about flesh tunnels is that they come in many sizes. You can start at the smallest size that you can fit into your foreskin and then work up in 1mm-2mm (diameter) increments as you progress.

Flesh tunnels come in many sizes. Start small and work your way up.

For example:

  • Week 1: 3mm
  • Week 2: 4mm
  • Week 3: 5mm
  • Week 4: 7mm
  • Week 5: 9mm

Wearing your flesh tunnel

During urination. Depending on where you are in your progress and how snug your flesh tunnel fits in your foreskin, you may find that inserting and removing the tunnel is too inconvenient to do “on the go”. For example, I needed a water-based lube to insert some sizes during a progression or else the friction was too harsh.

Fortunately, the flesh tunnel is a big donut, so you should be able to just leave it in and pee through it comfortably.

Clean it frequently. You definitely should treat it with some soap and water whenever you remove it.

I always clean anything that has anything to do with my foreskin area by dabbing a weak, watery soap onto a wash rag. Just be sure to give the tunnel a thorough rinse if you apply soap to it.

Whenever soap is not washed off well enough, it tends to remind you that it’s still there by irritating your sensitive tissue. I learned this lesson the hard way when I was sitting in a university class taking an exam with my flesh tunnel inserted. It started as a small itch and eventually had me waddling quickly to the restroom where I immediately popped out the flesh tunnel and awkwardly hung my junk over the sink it scratch the itch with running water.

Do not sleep with unfamiliar sizes. If you are not yet used to your foreskin’s limits, sensations, and the various stretches, then you don’t know how your foreskin might respond to a stretch overnight while you are sleeping.

When you’re awake, it’s easier for you to be aware of any pain, numbness, swelling, or complications that may occur.

While it’s certainly possible to sleep with a flesh tunnel in (which will give you ~eight hours of extra stretching per day), please make sure that you’ve been using tunnels for at least a week. And don’t do it with a size that you’ve never worn during the day.

For example, you don’t want to wake up and find that your foreskin has not been receiving blood for eight hours because you decided to put in a large flesh tunnel for the first time while you slept. Find your limits and respect them. Stick to the plan.

Tips for buying flesh tunnels

Only buy tunnels made of silicone. Silicone is the same material used for soft sex toys because it’s easy to clean, durable, safe for mucous membranes, and it can be made into a soft, squishy material.

Silcone tunnels are essential because they are squishy and comfortable.

In other words, make sure you are not buying metal, wood, plastic, or rubber flesh tunnels. You want to be able to squeeze your tunnels so that you can easy insert and remove them from the foreskin.

Rubber might seem like a reasonable substitute, but even if you find rubber tunnels that can be squished, the texture of rubber is abrasive and hard. I made this mistake and the constant rubbing of the rubber tunnel on the inside of my foreskin caused me to chafe so bad that I had no take a break for over a week.

Make sure you’re buying silicone flesh tunnels.

Make sure it has rounded edges. Since flesh tunnels press against the inside of your foreskin, you want to ensure that the flesh tunnel has smooth edges rather than sharp edges which can cut into your skin. Even an edge that doesn’t seem very sharp will introduce you to the compounding effect of rubbing against the inside of your foreskin all day.

Rounded edges let your stretch more aggressively. For instance, going from 6mm to 8mm sized tunnels might be bearable if the edges are rounded but impossible if the edges are sharp.

Get flesh tunnels with rounded edges and short walls/ridges.

As you can see, flesh tunnels have “walls” to prevent them from sliding out. Since the wall on one side will be inside the foreskin, you want to find tunnels with short walls (like #2 above) rather than tunnels with tall walls (like #4 above).

Ideally, the flesh tunnel would have no walls/ridges at all, but I did not find any.

Preventing frenulum pain with a notch

This step only applies to guys that experience pain or irritation from the flesh tunnel pressing on their frenulum ridge.

The frenulum band often continues on the inside of the foreskin all the way up to the foreskin’s opening. This ridge is more sensitive than the foreskin around it.

Some men experience discomfort along the bottom of their foreskin where the flesh tunnel presses against the frenulum ridge.

The frenulum usually can be seen all the way until the foreskin opening.

If the tunnel causes too much discomfort when pressing against this interior ridge of skin, then you can use a knife, scissors, or a razor to cut a notch in the flesh tunnel so that it doesn’t touch the frenulum.

A small notch can bridge over the frenulum if the tunnel is causing you pain.

As your frenulum gets used to the pressure of the flesh tunnel, you will not need the notch anymore. At that point, you should rotate the notch away from the frenulum so that an un-notched edge can put tension on the frenulum to stretch it.

I had to carve a notch for my first tunnel. The irritation went away after three days and I didn’t need the notch anymore. However, the knife I used ended up leaving a sharp edge on the notch.

I ended up using a nail file to get rid of the edge.