Prosthetics for Trans men 101
- thebridgealliancef
- Apr 28
- 4 min read
Stand to pee devices / Packers
What Is an STP?
An STP (Stand-To-Pee device) is a prosthetic that allows someone to urinate while standing. Many trans men use STPs to feel more comfortable and confident in public restrooms.
Common Questions
Can I wear my stand to pee packer when going through an airport body scanner?
Airport scanners use different settings based on how a traveler is categorized during screening. Depending on the selected setting, the device may be detected. As long as you are read as male, the stp will not show up on the scanner, but if you are read as female, it will. Many people find it easier having it in a bag in your carry-on bag when going through security at the air ports as they just scan it and go rather than having to have all the extra steps and time taken to explain during a pat down.
How long can I wear my stand to pee device? Can I sleep with my STP?
There are no strict rules. But it is best not to wear an STP for more than 8 hours at a time. Most STPs are made of silicone. Silicone can reduce airflow to the skin. In hot or humid weather, this may cause discomfort if worn too long. Sleeping with your STP is not recommended. Allow your skin time to breathe.
How often should I wash my STP packer?
It's usually not practical to wash your packer after every use, though if you're using it at home, it's a good idea to give it a quick flush under the faucet after use. Clean daily with antibacterial soap that is silicone safe ( or safe for whatever material your device is made of) Let air dry and if the packer becomes tacky - you can apply baby powder once completely dry.
Can my STP give me a yeast infection?
Yeast infections are more likely when skin stays warm and moist. Because STPs can trap moisture, wearing one too long may increase your risk if you get yeast infections often. If you recently had a yeast infection:
Make sure your device is fully cleaned before using it again.
Follow the manufacturer’s cleaning instructions. Not all devices are safe to boil or expose to high heat.
Talk to your provider if you notice: Redness that does not go away, Itching or burning, Pain, Unusual discharge, Repeated yeast infections
Can I use my stand to pee packer for sex?
Some packers are a multi use and can be used for both urination and sex but not all.
Tips for Using and Packing with an STP
Wear Snug Briefs
The closer your underwear sits to your skin, the better it will be able to hold your packer in place. Briefs tend to work best due to the leg elastic doing a great job at holding everything in place. Basically - the smaller the front pouch is, the less the packer will be able to move around.
Choose underwear with a side slit or modify them
Trying to use an STP pulled up over your waistband is close to impossible and will most likely result in back flow and an accident. Don’t try to fight gravity! Another useful trick for side slit underwear is to cut a small hole in the layer that sits against your skin where the shaft sits. This helps keep the device in place and makes using it much easier. It also means you don’t have to maneuver it around two layers of fabric.
Choose Pants That Allow You to Bring the Fly Down Low
Make sure you’re wearing pants that allow you to bring the fly down lower than your urethral exit. This makes positioning the STP and ensuring it’s not getting kinked in any way so much easier. A lot of backflow issues are caused by the STP either being kinked in the middle or the user not pointing the shaft low enough.
Discretely Lift the Cup Forward to Clear Any Remaining Drops
Once you’ve finished peeing, there’s a good chance there’ll be a few drops in the bottom of the cup.
There are many different kinds of packers and stp's. And when going for a bulge remember - bigger isnt always better. Go with what fits your stature and size.
Trans products by and for Trans people:
We believe gender-affirming care is about more than prescriptions—it’s about helping you feel comfortable, confident, and at home and in society.
Bottom Dysphoria Support
Choosing an STP
For beginners:
Wider cup for easier positioning
Softer, flexible materials
For more advanced use:
Realistic appearance
Multi-function options (pack, pee, play)
Learning to Use an STP
Like any new skill, using an STP takes practice.
Practice in the shower
Practice sitting on the toilet
Practice standing at home
Transition to public restrooms
Helpful tips:
Start with a slow stream
Focus on creating a secure seal
Expect a learning curve—this is completely normal
STP-Compatible Underwear
Specialized underwear can significantly improve comfort and success with STP use.
Helps maintain proper positioning
Improves alignment and reduces leaks
Allows for more natural, hands-free use
Packing & Affirming Underwear
Packing can help create a natural silhouette and improve body alignment.
Packing underwear
Built-in pouch for everyday use
Simple and accessible
Harnesses
Provide added stability
Ideal for movement or heavier prosthetics
Flat-front underwear
No bulge
Focus on comfort and breathability
Choosing What Works for You
Everyone’s needs are different. A simple starting point:
Want a visible bulge → packing underwear
Want to stand to pee → STP + STP-compatible underwear
Prefer simplicity → pouch underwear
Need extra stability → harness
Prefer no bulge → flat-front options
Hygiene & Care
Clean STP devices after each use
Use mild soap or designated cleaners
Allow to fully dry before storage
These tools are not just about appearance—they support:
Confidence in public and social spaces
Reduced anxiety, especially in restrooms
Greater comfort in daily life
Alignment between body and identity
Gender-affirming care is deeply personal. What works for one person may not work for another—and that’s okay. Whether you’re exploring these tools for the first time or refining what already works, we’re here to help you make informed, confident decisions.
Questions?
If you have questions about binding safety, STP use, or how these tools fit into your care plan, our team is here to support you.
Did you Learn something New from this?
Yes - I learned something new!
No -I already knew this information
Kinda - I knew most of this but I did learn one thing
Comments