AXOLOM STP Trunks-1.5" O-ring Black - Axolom
AXOLOM STP Trunks-1.5" O-ring Black - Axolom
AXOLOM STP Trunks-1.5" O-ring Black - Axolom
AXOLOM STP Trunks-1.5" O-ring Black - Axolom
AXOLOM STP Trunks-1.5" O-ring Black - Axolom
AXOLOM STP Trunks-1.5" O-ring Black - Axolom

AXOLOM STP Trunks-1.5" O-ring Black

Regular price$19.90
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Axolom STP Trunks Harness is a soft Breathable Cotton STP Packing underwear. It is a non-functional FTM Packing trunk. It means the trunks keep the dick in one place. It's not movable underwear. The packing underwear features an anti-roll middle “O Layer”. The button fly underwear is made for packing an STP Packer (It can be soft FTM packers or Stand to Pee Prosthetics). Now STP Packer can be used without a harness. Synonyms: STP Trunks Button-Fly Underwear, STP Brief, FTM STP Packing Trunks, FTM Harness.


The Axolom STP Trunks underwear has two layers. The outside layer shows two buttons that allow a person to STP (Stand to pee) in front of public toilets or private spaces through an FTM STP Packer. The inside layer(O Layer) keeps your STP attached to your body. It also has a layer of keeping the scrotum.

A short preview of Axolom STP Trunks:

The STP Trunks Underwear works for specially Thinker, Handy. It also works for other STP packers as well. Some STP packers may not suitable for it. AXOLOM STP trunks harness work with most of our STPs, which have a shaft diameter of less than 1.5". ( DOES NOT Fit the Homerun, Hoodie)

Size Chart: 

XS (27"-29")

S (30” - 32”), 

M (33” - 35”), 

L (36” - 38”), 

XL (39” - 41”), 

1XL (42” - 45”), 

2XL (46” - 49”), 

3XL (52” - 55”).


-Wide comfortable waistband, with the underwear itself made from high-quality fabric to last wash after wash

-Button fly opening to easily access the shaft

-Soft fabric-covered O ring to keep the shaft of your packer/STP in the natural hang position. 

-Interior elastic loop harness, hold your STP secure and in a natural position. ( Can be cut off if you think it's unnecessary.)

* 100% discreet shipping.
* Orders would be shipped out every Monday, Wednesday and Friday from China (GMT+8 ). (Except holidays.)
* Order can be canceled or changed before shipping. Please contact service team if you want to make any changes. (DM on Instagram @axolomproducts, Email:, WhatsApp: +1-253 449 337.)
* General shipping time:
-- United States, United Kingdom, Germany, France, Italy: 10-15 days. (DHL Express to the USA takes around 7-9 days.)
-- Other countries and regions: 15-20 days.

* You will receive an email with tracking information when your order shipped out. Tracking info will update in 7-10 days when it arrive the destination country.

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Customer Reviews

Based on 8 reviews
Pretty good but...

The boxers are pretty good for what they are. The quality is pretty good (the elastic band lost some shape already but it holds well), they're comfortable and (while being a bit short on the thighs) look good.
The packing pouch also allows me to use them with other non-silicone packers without issues, however it's not really easy to pack an stp with them? The easiest way seems to be to place it using both the elastic band and the O-ring while keeping the front buttons open and pulling the shaft trough before bending it down, however it's not really that easy and the packer tends to still move up semi significantly during the day. I'm also not a huge fan of the buttons constantly popping open.
As far as actually peeing with them my brain hasn't let me do that yet, but I'm working towards it. I'll say the STP looks natural trough the boxers.
Overall I would raccomend these, but don't get your expectations TOO high

I still haven't figured out how to pack comfortably with these

I find the fabric to be soft, the trunks are very well made and the logo on the elastic band is cute. I pack with a Thinker 3 in 1. This underwear, so far, is good and for "playing" but I still haven't figured out how to pack comfortably. I don't have problems packing when I use regular underwear, so it's not the packer. Maybe it's because of the sturdy seams and my sensitive skin, idk but I'll figure it out eventually.

Ash Edgell-Hiles

They fit me and my stp (knight 3-1) very well! It’s a little hard to fit the packer in the area between the O-Ring and the button but it comes with practice! Other than that I’m very impressed

Roy Philbrick
Got the wrong underwear

They sent me 3 pairs of jock straps instead of boxers

Christa L
Love it!

These are great! My son said he doesn't even notice that he's wearing his packer. He wanted a harness originally but I think this is probably more comfortable for every day wear. I will buy more.

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