FLAT FRONT
Cake Bandit · Flat Front Underwear
Flat Front.
No Extras.
Flat front underwear with a clean, flat look — no built-in bulge, no extra fabric, no compromises. Wear it as-is or load it up. Cut for trans masc and nonbinary bodies; your call how you wear it.
Two flat front styles — here's the difference
Flat Front Jocks & Boxer Briefs — no pouch, no curve, no extra fabric. The same Cake Bandit construction, cut completely flat. Wear them on their own for a clean silhouette, or pair with a harness if you want to pack.
STP Range — also flat front, no curve, and stand-to-pee functional. Holds an STP or packer down and in place. Wear with nothing and it's a clean flat front — add a device and it works for packing or standing to pee.
Style breakdown, sizing & FAQs+
Flat Front — no function
Flat Front Jock
Classic jock silhouette, completely flat front. No pouch, no padding. Pairs with any harness or worn solo for a clean flat look under anything.
Flat Front Boxer Briefs 3"
Boxer brief cut, flat front construction. No extra fabric up front — just a clean, comfortable fit. Available with and without logo.
STP Range — flat front + functional
STP Briefs
Brief cut, flat front, STP-ready opening. Holds your device down and in place. Multiple colorways including monochrome skin tones.
STP Boxer Briefs 3"
Boxer brief length, flat front, fully STP-functional. Packs, stands, or wears clean with nothing inside. Available in monochrome skin tones.
STP Boxer Briefs 6"
Longer cut for more coverage, same flat front STP function. Great for active wear and longer days.
STP Long Underwear
Full-length flat front long underwear with STP functionality. Sizes include hip and inseam — check the size guide before ordering.
Sizing
Measure at your hips, not your waist
All Cake Bandit flat front styles are low-rise — they sit at your hips. Measure at the fullest point of your hips and seat. S fits 27–31", M fits 32–36", L fits 36–38", XL fits 38–42", 2XL fits 42–47", 3XL fits 48–52". If between sizes, size up.
Complete your setup
More from TGS
What's the difference between flat front and packing underwear?
Packing underwear is curved and has a built-in front pouch that holds a packer or STP device all day — no harness needed. Flat front underwear has no curve; some styles include a thin flat inner layer that makes them packer-optional without adding bulky empty fabric — they stay flat. To pack in a flat-front style that has no inner layer, pair it with a separate Cake Bandit harness, or choose a flat-front style with the pouch option.
Can I use a packer with the flat front STP styles?
Yes. The flat front boxer briefs have a flat inner pouch that fits any size packer; the no-logo boxer briefs have a small flat inner pouch for smaller packers only. The STP range holds both STP devices and soft packers — the opening secures a device down and in place. If you just want to pack without STP function, a soft packer sits comfortably in the STP opening too.
Do I need an STP device to wear STP underwear?
No. STP underwear works great worn empty — it's just a flat front brief or boxer brief with a discreet opening. Many people wear it daily with nothing inside and appreciate the flat, gender-affirming cut. The STP function is there when you want it.
Which flat front style is best for beginners to STP?
The STP Briefs are the most popular starting point — brief cut, easy to position your device, and forgiving while you're learning. The STP Freely is the most beginner-friendly device to pair with them.
Do you ship discreetly?
Always. Every TGS order ships in a plain, unmarked mailer. The return address reads "Shipping Dept." only — no mention of what's inside or who it's from.
STP Guide
First-time STP use, which devices work best, and how to position for success.
Read the Guide →How to Choose Packing Underwear
Underwear vs. harness, packing vs. flat front — what to look for and how to size.
Read the Guide →3 Best FTM Packer Underwear Brands
What makes good packing underwear — and why flat front is its own category.
Read the Article →
