PACKING GEAR - UNDERWEAR + HARNESSES + POUCHES
Cake Bandit · Trans-Owned · NYC-Designed
Packing Underwear
& Harnesses
Packing underwear, STP underwear, and packing harnesses for trans men, trans masculine, non-binary, and gender expansive people. Built-in packer compatibility — no workarounds, no cis-normative cuts. Sizes XS–3XL+.
What's in this collection
Built-in Pouch.
Pack & Go.
Everything you need built right in — no separate harness, no fumbling. Put it on, pack, and go.
- CB Monochrome Packing Briefs — 4 colors
- CB 6" Packing Boxer Briefs — 4 colors
- CB STP Boxer Briefs , Briefs, and Jocks— 5 colors, S–3XL
- CB Packing Jockstrap — 9 colors
- CB O-Ring Boxer Brief Harness New Logo — updated design
- Shop Packing Underwear →
Pack in
What You Own.
Keep your own underwear. A harness secures your packer without replacing your whole drawer. From $16.50.
- CB O-Ring Boxer Brief Harness — 3 colors, from $16.50
- CB Packing Harness — jockstrap style, 3 colors
- CB Monochrome Skin Tone Harness — 3 colors
- CB O-Ring Harness
Full style guide — pick by how you pack+
All styles compared
| Style | Cut | Packer pouch | STP-ready | Wear own underwear | Best for | From |
|---|---|---|---|---|---|---|
| CB Packing Briefs | Brief | ✓ Built-in | ✗ | ✗ | Everyday comfort packing | $20 |
| CB 6" Boxer Briefs | Boxer brief | ✓ Built-in | ✗ | ✗ | Boxer feel, all-day pack | $20 |
| CB STP Boxer Briefs | Boxer brief | ✓ Built-in | ✓ Yes | ✗ | Pack + stand to pee | $20 |
| CB Packing Jockstrap | Jockstrap | ✓ Built-in | ✗ | ✓ Yes or on it's own | Gym, sport, no seat coverage | $20 |
| CB Swimwear | Jocks, brief, trunks and shorts |
✓ Built-in |
✗ | ✓ Yes or on it's own | Swimming, sport, gym, active days | $26 + |
| Packing Pouches | Clip on Pouch |
✓ Built-in |
✓ Yes / STP Range | ✓ Yes | Everyday wear, swim | $22.50 |
| CB O-Ring Harness |
Boxer Brief Harness |
✓ O-ring | ✓ Compatible | ✓ Yes | Everyday wear, for play time | $16.50 |
| CB Packing Harness | Jock harness | ✓ Straps | ✓ Compatible | ✓ Yes | Pack in your own underwear | $20 |
| CB Skin Tone Harness | Jock harness | ✓ Straps | ✓ Compatible | ✓ Yes | Discreet, skin-tone match | $20 |
Cake Bandit Size Guide
| Size | Waist | Hip |
|---|---|---|
| XS | 24–26" | 33–35" |
| S | 27–31" | 36–38" |
| M | 32–35" | 39–41" |
| L | 36–38" | 42–44" |
| XL | 39–42" | 45–47" |
| 2XL | 43–46" | 48–51" |
| 3XL | 47–52" | 52–56" |
Packing heavy or want a firmer pouch hold? Size down. All-day comfort? Size up. When in doubt, size up.
What's the difference between packing underwear and a packing harness?
Packing underwear has the pouch built right in — put it on, add your packer, and go. A harness lets you pack in underwear you already own. Both hold securely all day. It comes down to whether you want an all-in-one pair or the flexibility to use any underwear you already have.
Which style works with an STP device?
The CB STP Boxer Briefs are purpose-built for stand-to-pee use. The O-Ring Harness and Packing Harness also work with most STP devices when positioned correctly. See our STP Guide for full setup tips.
What size should I order?
Measure your hip at its fullest point and your natural waist. Use the size chart above — Cake Bandit sizes by both measurements. If you're between sizes and pack heavy, size down for a firmer hold. If you prioritize all-day comfort, size up.
Which style is best for a first-time packer?
The CB Packing Boxer Briefs or O-Ring Harness are the most popular first-time options. The Boxer Briefs give you the cleanest all-in-one experience. The O-Ring Harness ($16.50) is the lowest-commitment entry point if you want to try packing before committing to a full new pair.
Can I return or exchange packing underwear?
All underwear and harness sales are final for hygiene reasons. We strongly recommend measuring before ordering. If you have questions, email hello@transguysupply.com — a real person will help you pick the right size and style before you order.
How often should I replace packing underwear?
Packing underwear works harder than regular pairs — the added weight and movement of a packer puts constant strain on waistbands and pouch seams. Check in at the 6-month mark for daily-wear pairs. Watch for elastic that's lost tension, a pouch that shifts, or fabric thinning in the seat or gusset. Read the full guide →
Do you ship discreetly?
Always. Every order ships in a plain, unmarked mailer from our shipping dept. — no product names, no logos on the outside.
Complete Your Setup
From the blog
FTM Packing Underwear Guide
Packing underwear vs. harness, what to look for in a first pair, and how to size correctly.
Read the Guide →STP Guide: How to Choose & Use a Stand-to-Pee Device
First-time STP use, positioning, and which devices pair best with which underwear styles.
Read the Guide →FTM Packing — Everything You Want to Know
Soft pack vs. hard pack, daily positioning tips, and what size packer to start with.
Read the Guide →How Often Should You Replace Your Underwear?
The trans body guide to elastic lifespan, hygiene, and why being on T changes your timeline.
Read the Guide →
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