Cake Bandit STP Boxer Briefs - 3"

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 and a 3” Inseam. 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”

Model in Mauve: Sloan Leo (they/he) is 5' 10" and is wearing a size 2XL.

Model in Navy: Tamren (they/them) is 5' 3" and wearing a size 2XL.

Customer Reviews

Based on 47 reviews

Way better than expected!


Way softer then expected and doesn’t roll up on the thighs super perfect


The stp ring was slightly too small for my stp but it’s due to my stp being too big, nothing wrong with the briefs at all. Comfortable and breathable.

Great briefs!

Love my cake bandit briefs, they’re super comfy and are great at accommodating my STP Freely XL


comfortable and breathable


You can expect your order to ship within 2-3 business days after purchase. Print to order items, such as t-shirts, will sometimes take longer and will ship separately.


STP, Packer, Harness, and Underwear sales are final. All other returns are issued in store credit only.

International Orders

Please note that for all non-US orders, you may be charged local taxes in order to retrieve your order. Additionally, all international sales are considered final. See our Shipping Policies for more details.