Axolom STP Boxer is a soft Breathable Cotton STP Packing underwear for FTM Trans Guys, Non-Binary, and others. It is a non-functional FTM Packing boxer. It means the boxers keep the dick in one place. It's not movable underwear. The packing underwear features an anti-roll middle “O Layer”. The button fly is made for packing an STP Packer (It can be a soft packer or Stand to Pee Prosthetics). Now STP Packer can be used without a harness. Synonyms: STP Button-Fly Underwear, STP Brief, FTM STP Packing Boxer.
The Axolom STP Boxer is very comfortable with Axolom Uncircumcised or Circumcised Thinker STP Packer. It is also designed for Axolom Handy, Axolom Astro, and other STP Prosthetics.
A Preview of Axolom STP Boxer:
Introduction:
The Axolom STP Boxer 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 the FTM STP Packer. The inside layer(O Layer) keeps your STP attached to your body. It also has a layer of keeping the scrotum.

The STP Packing Underwear works for specially Thinker, Handy. It also works for other STP packers as well. Some STP packers may not suitable for it.
More Information: AXOLOM STP boxer work with most of our Stand To Pee Prosthetics, 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”)

Material: 95% Cotton, 5% Spandex.
- 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.)
- Wide comfortable waistband, with the underwear itself made from high-quality fabric to last wash after wash.
Color: Black, Navy Blue
Wash Cold, Tumble Dry or Medium Low.
* 100% discreet shipping.
* Orders would be shipped out within 2 working days.
* Order can be canceled or changed before shipping. Please contact service team if you want to make any changes. ( Email: info@axolom.com)
* General shipping time:
-- United States, United Kingdom, Germany, France, Italy: 12-18 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.
PLEASE WATCH AXOLOM PRODUCTS REVIEW VIDEOS ON YOUTUBE BEFORE YOUR PURCHASE! WE REPLACE MANUFACTURING DEFECTIVE ITEMS, BUT NO RETURNS OR REFUND ON WRONG DESIGNS.
I haven’t tried them with an STP yet, but as packing underwear they are comfortable! The fabric is really soft, stretchy but retains its shape. I feel a little bit self conscious about the visibility of the rubber o-ring within the boxers, I wish it was just reinforced fabric around the hole vs a rigid rubber o-ring.
This works better than any harness I have ever used. I go a size or two down for snugness during play and it has been INCREDIBLE!! I HIGHLY recommend this product!
Super nice packer; made me feel like I finally found the one for me! Fits easily into the fly of some tight boxer briefs without feeling like it wants to jump ship (can walk/move easily), though if I were to be doing any serious exercising I’d want a harness or something just for peace of mind.
Also just the right size for when I want to wear a packer but am also feeling self-conscious (not out; sometimes worry about looking lumpy lol). I like how easy it is to wear, and it’s light enough I sometimes forget I’m wearing it. The silicone is very squishy, but doesn’t feel flimsy at all (and not sticky after a few weeks of daily washes, so I don’t feel the need to starch it!).
Highly recommend, especially if you want an easy to wear packer, are an active person, or if you’re looking for your first packer!
Started with the au natural and upgraded to argos lifecast uncut and omg it’s so much better. Passes the feel test 100% and the balls look incredibly real. I was worried the bulge would be too big but it’s perfect, I’m 5’5 175lbs. I’ve never felt so connected to a packer until this one. Buying a second one just in case! Absolutely no complaints.