May 15, 2026

FTM Packers, STPs and 3-in-1s: The Complete NZ Guide (2026)

Packers, STPs and 3-in-1s are gender-affirming products used by trans men, transmasculine and non-binary people, drag kings, cosplayers, and gender-non-conforming folks across Aotearoa. This guide explains what each type does, how they differ, what materials to look for, how to wear and clean them, and how to choose your first one — written for NZ readers, with no judgement and no euphemisms.

If you're starting your packing journey or upgrading from a sock, you're in the right place.

Quick answer: which one do I need?

Packer — you want a natural bulge in your underwear or jeans. That's it.
STP (Stand-To-Pee) — you want to be able to pee standing up at urinals or in the bush.
3-in-1 — you want one device that packs all day, lets you pee standing, and can be used for partner play.

Most people start with a soft packer, then add an STP later when they're ready for public bathroom use. 3-in-1s are popular with users who want fewer separate products.

1. What is a packer?

A packer is a soft, flaccid silicone prosthetic worn inside underwear to create the appearance of a natural bulge. It doesn't do anything mechanical — it just sits in your underwear and shapes the front of your jeans the way you want it to.

Packers are used by:

Trans men and transmasculine people as part of everyday gender-affirming presentation
Non-binary and gender-non-conforming people who want bulge as part of their look
Drag kings for performance
Cosplayers and theatre performers
Anyone who wants the visual confidence of a bulge under their clothes

A good packer is medical-grade silicone, soft enough to be comfortable all day, has natural weight (so it sits properly rather than floating), and matches your skin tone. See our full Packers NZ range — every product we stock is body-safe silicone.

Packer sizing in NZ

3 inches (compact): sits invisibly under loose joggers, gym shorts, or work pants. The most low-key option.
4 inches (mid-size): the sweet spot for most NZ wearers. Reads naturally in jeans, work pants, suits.
5 inches (full): more visible bulge. Better for tight jeans, fitted pants, or when you want presence.

Most first-time buyers go with a 4 inch. If unsure, that's the safe pick.

Skin tones

Major brands stock light, medium, tan, brown and deep skin tones. Match as closely as you can to your forearm or thigh — the inner thigh is usually closest to the actual visible match. If you're between tones, slightly lighter usually looks more natural than slightly darker.

2. What is an STP (Stand-To-Pee)?

An STP packer is a packer with an internal funnel and shaped opening at the tip, so you can urinate standing up through the prosthetic — at a urinal, in a forest, on a tramping trip, anywhere you'd rather not sit down.

STPs solve a real problem for trans masculine people: bathroom access. Using a male public bathroom comfortably, without dysphoria from sitting, without prolonged time inside a stall, is genuinely useful.

STPs are slightly firmer than soft packers because the internal funnel needs to hold its shape. Most modern STPs are still comfortable for all-day wear, but if you want maximum softness for packing-only use, a dedicated soft packer is more comfortable than a dedicated STP worn as a packer.

How an STP works

Position the STP funnel against your urethra, base flush against the body. Most STPs have a slight scoop or cup shape you press into place.
Aim slightly downward at the urinal (the funnel directs flow, not gravity).
Pee normally. Don't push or rush — let flow happen at its own pace.
Shake or wipe the tip the same way you would naturally.
Reposition in your underwear.

Practising your STP at home

Almost everyone needs practice before their first public use. Spend a session or two in the shower with the STP — you can experiment with positioning, angle and flow rate without consequences. Most people are confident within 3–5 attempts.

3. What is a 3-in-1?

A 3-in-1 packer does three jobs in a single device: it packs (worn flaccid as a bulge), it STPs (you can pee standing through it), and it can be used for partner play (firm enough to be inserted, often with a harness).

The trade-off: a 3-in-1 is rarely as soft as a dedicated packer, as comfortable as a dedicated STP, or as firm as a dedicated pleasure dildo. It's the all-rounder — good at everything, perfect at nothing.

3-in-1s suit people who want:

Fewer separate prosthetics to manage and clean
A travel-friendly all-rounder
Spontaneous partner play without switching to a separate dildo
An upgrade path from a basic packer without buying multiple specialist products

Popular 3-in-1 ranges in NZ include Emisil custom-fitted prosthetics and the Mr Limpy 3-in-1 line, plus several mid-range options across our Packers collection.

4. Materials: what to look for, what to avoid

The only material to consider: medical-grade silicone

Silicone is the gold standard for packers and STPs because:

It's non-porous — nothing absorbs into the surface, including urine in an STP
It's hypoallergenic — safe against skin all day
It can be fully sterilised by boiling for 3 minutes (important for STPs)
It has natural weight and movement for a believable bulge
It lasts 5–10+ years with care

What to avoid

TPE, TPR, jelly, "thermoplastic elastomer": porous, retains urine smell in STPs, degrades within months. Don't.
Cyberskin, "real feel" without silicone spec: usually proprietary PVC blends, porous, ages poorly.
Foam-core packers: cheap but absorb everything. Hygiene issue.
Anything without a clear material spec: if a seller won't say what their packer is made of, don't buy it.

5. Underwear and harnesses for packing

You can wear a packer in regular underwear, but packing-specific underwear is dramatically more comfortable — it has a built-in front pouch that holds the packer in position so it doesn't migrate or fall out when you sit down or move quickly.

Common options in NZ:

SpareParts Hardwear — packing boxer briefs with internal pouch
RodeoH — packing underwear plus harness-compatible designs
Outplay — NZ/Aus-friendly packing options

For partner play with a 3-in-1, you'll want a harness. See our Strap-Ons NZ collection for harness options that fit packer bases.

6. How to wear a packer comfortably

Wash the packer before first wear (warm soapy water, air-dry).
Position centrally in the pouch of your packing underwear. For regular briefs, position centred and slightly to one side (your natural preference).
Adjust for shape. Most packers sit slightly downward and to one side. Take a minute to settle it.
Sit down once, stand up, walk a few steps — adjust as needed. You'll know within 60 seconds if it's right.
Bring a small bag for first-day wear, in case it shifts uncomfortably and you want to remove it.

Most packer wearers can wear all day comfortably within a week of getting used to it. Sleep position is personal — some sleep wearing, most take it out.

7. Cleaning and care

Soft packers

Wash every 1–3 days of wear with warm water and mild fragrance-free soap.
Boil for 3 minutes every couple of weeks for full sterilisation.
Air-dry fully before next wear or storage.
Rotate between two packers if you wear daily — extends the life of each.

STPs and 3-in-1s

Rinse the internal channel with warm water immediately after every STP use. A small squeeze bottle helps.
Wash thoroughly with warm soapy water at least daily if used as an STP.
Boil for 3 minutes weekly for full sterilisation.
Air-dry fully — a damp internal channel develops bacteria and smell. Stand the STP upright on a clean towel to dry.
If you ever notice odour: boil immediately. If odour persists, the device is at end of life.

Storage

Store flat in a soft pouch (most packers ship with one). Keep away from direct sunlight and don't store touching other silicone toys — silicone-on-silicone contact can degrade the surface over years.

8. Tramping, swimming, the gym

Tramping/hiking: a soft packer is fine for short trips. For multi-day tramps with rivers and bush toilets, an STP is genuinely useful.
Swimming: silicone is waterproof; packing in board shorts works. Be aware some packers can be visible when wet — a snugger swim brief solves this.
Gym: packing underwear with a snug fit prevents migration during squats, runs, etc. Many wearers prefer a smaller (3") packer for active sports.
Air travel: packers are not flagged at NZ airport security. They appear as soft silicone in scanners.

9. Common mistakes to avoid

Buying too big. A 5" packer creates an obvious bulge that draws more attention than it deflects. Most NZ wearers are happiest at 4".
Buying TPE or jelly. They smell within months. Silicone only.
Skipping packing underwear. Regular underwear works — but a packing pouch transforms comfort.
First public STP use without home practice. Spend a session in the shower first.
Not cleaning the STP channel. Skipping internal rinses = odour within a week. Don't skip.
Using one packer 24/7 with no rotation. Buy two and alternate — each lasts longer.

10. Frequently asked questions

How much do packers cost in NZ?

Soft silicone packers start at around $50 NZD and go up to $150 for premium brands like Emisil. STPs typically cost $80–$200. 3-in-1s range from $90 to $400+ depending on customisation. Custom-moulded prosthetics (Emisil's bespoke service) sit at the top of the range.

Will my packer show through my jeans?

Sized correctly, no — it reads as a natural bulge. A correctly-sized 4" packer in mid-weight jeans is essentially indistinguishable from cis anatomy at conversational distance. Tight jeans show more shape; loose jeans hide everything.

Can I wear a packer to work?

Yes. Most office wear, retail wear, hospitality wear and tradie wear accommodates a packer without issue. Sizing down to 3" or 4" gives the most discreet result.

Can I wear a packer at the gym or pool?

Yes — silicone is fully waterproof. Packing underwear with a tighter fit (or board shorts for swimming) keeps it in position during movement.

How long does a packer last?

Medical-grade silicone packers last 5–10+ years with normal use and good cleaning. STPs typically last 3–7 years — the constant urine exposure and internal rinsing wear them faster.

Can a packer be used as a strap-on?

Soft packers are too pliable for penetrative use. 3-in-1 packers are designed to be firm enough for partner play with a harness. If you only want strap-on use, see our Strap-Ons NZ range — better suited than a 3-in-1 for pleasure-focused use.

Where do I learn STP technique?

YouTube and trans-led community channels have practical tutorials. The product manuals included with major STP brands also cover positioning. The shower is your friend for practice.

Is this covered by NZ public health?

Prosthetics for gender-affirming use are not currently subsidised through Pharmac or DHB pathways. Some patients receive assistance through ACC or charitable funds in specific cases. Speak to a gender-affirming GP for current options.

Where can I find inclusive support in NZ?

Gender Minorities Aotearoa (genderminorities.com), RainbowYOUTH, OUTLine NZ, and InsideOUT all provide community-led support and information. For medical pathways, GenderHelp NZ (genderhelp.nz) has up-to-date provider lists.

11. Recommended starter setup at Naughty Hut

If you want a concrete shortlist for your first packing setup:

Your first packer: 4" soft silicone in your skin tone — see Packers NZ
Packing underwear: brief or boxer brief with a built-in pouch (multiple brands in our Strap-Ons collection)
Travel pouch: ships with most premium packers, otherwise a soft cotton drawstring pouch works
Optional second packer: rotate to extend life of each (3" for sport, 4" for daily)
Browse the broader Dildos NZ hub if you want to compare with other silicone products

The bottom line

Packing is a low-fuss, gender-affirming everyday practice for thousands of trans masculine, non-binary and gender-diverse New Zealanders. Start with a soft medical-grade silicone packer in a 4" size that matches your skin tone, pair it with packing-specific underwear, and add an STP later if and when bathroom use becomes a goal. A 3-in-1 is a great upgrade for anyone who wants packing, STP and partner play in one device — just don't make it your first purchase if you only need everyday packing.

Naughty Hut ships every order in plain unbranded packaging from inside NZ — nothing on the parcel or courier label identifies the contents. Browse our Packers NZ range to find your match.

Reviewed and updated: May 2026 by the Naughty Hut editorial team. See our editorial standards. We welcome feedback on the language and resources in this guide — if you're a trans or non-binary reader and something here doesn't sit right, please let us know.