Cake Bandit Monochrome STP Boxer Briefs

by TG Supply


FTM STP Boxers for a Harness-Free Stand-to-Pee Experience.

Cake Bandit STP Packing Trunks are made with super soft, breathable cotton. They can be worn with a foam insert, regular soft packer, or stand-to-pee device without needing a harness or packer strap. 

This STP Packing underwear was designed to work with the STP Freely but may be compatible with other STP and packer models.  


Constructions Details: Our STP underwear has a 3-layer construction. The outside layer has buttons on the front to pull the STP through to pee. The middle layer has an opening to pull the shaft through the front. And finally, the inside layer (the one closest to your body) allows you to put the STP into the underwear and the shaft through to the second layer.

  • 92% Cotton 8% Spandex
  • Wash cold with like colors - will shrink a little in a hot or warm wash
  • No Bleach
  • Tumble Dry on Medium Low - will shrink a little in the dryer


Small: 27"- 31”
Medium: 32”- 35”
Large: 36” - 38”
XL: 39” - 42”
2XL: 43”- 46"
3XL: 47"- 52”


Customer Reviews

Based on 5 reviews

yep i think this is underwear ngl

Trans underwear perfection

This pair of underwear actually has a little hidden pocket for a packer plus the normal **** pocket most boxers have, I've never seen one like this

Fits great

I got a small after making the mistake of getting myself a medium in the briefs previously. I would recommend paying attention to the sizing information and possibly sizing down because a medium was very saggy on the butt for me when usually a medium fits. Small fits great!

Room for improvement.

The design that holds the STP has too much slack which causes my prosthesis to rise up into an awkward looking position. I’ve downsized the underwear thinking maybe a tighter fit would solve the problem but it’s still a consistent issue despite also trying different STPs.


Runs big


Your order will typically ship within 2-3 business days after purchase.

Please note that print-to-order apparel items, such as t-shirts, hoodies, etc... require additional processing time and will be shipped separately.


STP, Packer, Harness, Swimwear and Underwear sales are final. They cannot be exchanged or returned due to legal restrictions. Please consult size charts carefully; Sizes vary between brands. It's recommended to get accurate measurements taken by a pal. All other returns are issued as in-store credit only.

International Orders

Please note that for all non-US orders, you may be charged local taxes to retrieve your order.

Additionally, all international sales are considered final. See our Shipping Policies for more details.