May 15, 2026

Anal Training Kits NZ: Progressing Through Sizes Safely (2026)

An anal training kit is a graduated set of butt plugs — usually 3 plugs in stepped sizes, sometimes 5 in a dilator-style set — designed to let you build up to comfortable anal play over weeks rather than one session. Each plug in a kit shares the same shape and material; only the size changes. The point isn't to "complete" the kit by reaching the biggest plug — it's to give you the right next size on hand whenever the current one feels easy. This guide walks you through choosing the right kit for your situation, the realistic week-by-week progression most people actually do, and how to know when you're ready to step up (or when the size you're at is the right one to stay).

Quick answer: what to buy and how to use it

Buy a 3-piece silicone training kit with the smallest plug under 2.5cm at the widest point. $35–$70 NZD at Naughty Hut.
Buy thick water-based anal lube. Non-negotiable.
Week 1–2: smallest plug only. Short 10–15 minute sessions, plenty of lube, relaxed position.
Week 3–4: same plug, longer sessions.
Week 5–6: step up to medium plug if smaller now feels easy.
Week 7+: step up to large only when medium feels easy. Stay where you're happy.
Most people are happiest at 3–3.5cm widest. Don't feel pressure to use the biggest plug just because it's in the kit.

That's the framework. The rest of this guide is detail.

What an anal training kit actually is

A training kit is a packaged progression. Instead of buying a small plug, using it for a few weeks, then buying a medium plug separately, you buy three (or sometimes five) graduated sizes upfront in one matching set. The smallest is genuinely beginner-sized — typically 2–2.5cm at the widest point. The middle is intermediate, usually around 3cm. The largest tops out at 3.5–4.5cm depending on the kit. Some 5-piece dilator kits offer smaller increments — useful for people who want a very gradual progression.

Most kits use the same material and shape throughout, so each step is the same toy experience just scaled up. This consistency is the point: you're not adjusting to a new shape or texture each step, just to the new size.

Why a kit beats buying individual plugs (for most people)

The next size is on hand when you want it. No waiting for a second order to arrive at the moment you decide the smaller plug feels too easy.
Lower per-plug cost. A 3-piece kit usually runs $35–$70 NZD; three equivalent individual plugs would run $60–$120.
Matching aesthetic. The kit is designed as a set — same colour, same shape, same brand. Some buyers don't care; some do.
Better step-sizing. The kit is designed with sensible gaps between plugs (usually 0.5–1cm). Buying separately, you might end up with two plugs that are almost the same size or two that are too far apart.

Buying individually makes more sense if you want different materials at each step (silicone for daily, glass for special, jewelled for partnered) or specific shapes for specific goals.

Who should buy an anal training kit

Complete beginners. The classic use case. Gives you sizes 1, 2 and 3 of your anal-play journey upfront.
People preparing for partnered anal sex. Building up to 3–3.5cm widest sustained makes partnered receptive penetration significantly easier.
Couples training together. The receptive partner uses the kit at their own pace; the partner-to-be follows that pace.
Returners. Anyone who tried anal play, took a break, and wants to ease back in.
Medical dilator users. Anal training kits and medical dilator sets overlap heavily — the dilator-style 5-piece kits are sometimes prescribed for pelvic floor therapy, post-surgery recovery, or pain conditions. (Speak to a doctor about medical use; recreational training kits aren't medical devices.)

How to choose the right kit

Starting size matters most

The smallest plug should be under 2.5cm at the widest point if you're a beginner. Some kits start at 2cm; some at 2.3cm. Anything starting wider isn't a true beginner kit, regardless of marketing. Check the listed widest-point measurement of the smallest plug — it's the most important number in the kit.

Step size between plugs

0.5–1cm increments are ideal. Small enough that each step feels manageable, large enough that you can feel the progression. A kit that jumps from 2cm to 4cm in two steps is too aggressive for most beginners. Look for the diameters listed for each plug in the kit and check the gaps make sense.

Top size matters less than you think

The biggest plug in a 3-piece kit is usually 3.5–4cm widest. That's well beyond what most people end up using regularly — most are happiest at 3–3.5cm. You're not buying the kit for the biggest plug; you're buying for the middle plug, with the biggest as an option for later if you want.

Material

Medical-grade platinum-cure silicone is the standard. Soft, flexible, body-safe, easy to sanitise. The right choice for almost all beginners.
Borosilicate glass training kits (like the Clarity Utopian Trinity) are firmer than silicone at the same diameter, fully sterilisable, and support temperature play. Glass feels more substantial — some prefer it, some find it harder as a beginner material.
Metal kits are uncommon and usually advanced — the weight adds a different sensation that beginners often find too intense.
Avoid TPE, PVC, jelly or unbranded "rubber" kits for anal use. Porous materials harbour bacteria and the rectal lining is highly absorptive.

Aesthetic / decorative kits

Some training kits double as decorative plug sets — jewelled butt plug sets like the Adam & Eve Rainbow Heart Gem range, glittered glass sets like the Adam & Eve Glitter Gem, or rainbow-colour sets. These work as progressions and as bedroom-aesthetic plugs. Practical and pretty isn't a contradiction.

Flared bases on every plug

Non-negotiable. Every plug in the kit must have a clearly flared base wider than the bulb. This isn't usually a concern with quality training kits — reputable brands all include flared bases — but always check.

The realistic 6-week progression

This is the progression most people actually do, regardless of how the kit's marketing materials describe it.

Week 1–2: smallest plug only

Three to four sessions in this period, 10–15 minutes each. The goal is comfortable insertion, sitting with the sensation, comfortable removal — nothing more ambitious. Plenty of lube. Lie on your side with knees bent for the easiest first insertions. By the end of week 2, the smallest plug should slide in easily, sit comfortably, and remove easily. If it doesn't, stay at this stage for another week or two — there's no rush.

Week 3–4: same plug, longer sessions

The smallest plug, but now you're comfortable enough to extend session length to 20–40 minutes. Try wearing during solo masturbation or partnered foreplay. Try different positions — lying on your back, on your stomach, propped up reading. This is the stage where the smallest plug stops being a project and starts being a normal addition to your sex life.

Week 5–6: step up to medium plug

Only when the smallest plug genuinely feels easy. The medium plug will feel noticeably different on first insertion — more pressure, more stretch, more substantial. Apply more lube, go slower than you did with the small plug, breathe through the insertion. If it doesn't go in easily, more lube; if more lube doesn't fix it, step back down to the small plug for another week then try the medium again. Most people get the medium plug working comfortably within 2–4 sessions.

Week 7+: step up to large — maybe

Here's where most kits become aspirational rather than actual. The large plug in many 3-piece kits is 3.5–4cm widest. Most people find the medium (around 3cm) is their long-term comfortable size and don't move to the large. That's the right outcome for most bodies. If you do want to try the large, the same approach applies: more lube, slower, more relaxed than the medium. If after 4–5 attempts the large still doesn't feel right, you've found your right-fit size at medium — a complete result.

How to know you're ready to step up

Three criteria, all need to be true:

Insertion is easy. The current plug slides in with normal lube application, no significant resistance, in under 30 seconds.
Wearing is comfortable. You can wear the current plug for 30+ minutes without discomfort, soreness or distraction.
Removal is easy. The plug comes out without strain or discomfort.

If any of these isn't true, stay at the current size for another session or two. If all three are true and you want more sensation, the next plug is ready.

How to know to stay where you are

Most people stop progressing at 3–3.5cm widest and stay there long-term. That's the right answer for most bodies. Sometimes the right answer is to stay at 2.5cm. The signals:

The current size produces all the sensation you want.
Stepping up sounds like a chore rather than an upgrade.
The current plug is comfortable for whatever play you do (solo, partnered, daily wear).
You're not curious about whether bigger would be different — you're satisfied.

Bigger isn't better. Comfort and pleasure are the measures.

What "anal training" actually does (the biology)

This is worth understanding because it answers a lot of beginner anxiety in one paragraph.

The anal sphincter is a ring of muscle that, like any muscle, becomes more relaxed and responsive with regular gentle use. Training kits work by gradually conditioning the sphincter to relax around progressively wider objects — the same principle as stretching any muscle over time, no different from a yoga practice's effect on hip flexors. The rectum itself is highly elastic and accommodates wider objects easily once the sphincter is relaxed. There's no permanent stretching, no loss of muscle tone, and no "point of no return" — the sphincter returns to baseline tone between sessions. Anal training is reversible, low-risk and well-tolerated by most people when done slowly with adequate lube.

This is why concerns about "permanent stretching" from anal play don't match medical reality. The muscle does its job between sessions; tone is maintained.

Couples training together

If you're using the kit to prepare for partnered anal sex, a few notes:

The receptive partner sets the pace, full stop. The partner-to-be follows.
Solo first, then partnered insertion. The receptive partner gets comfortable with each plug solo before introducing partnered insertion of the same plug.
Penis/strap-on isn't a fourth plug. A 3.5cm plug worn comfortably doesn't translate to 3.5cm penis/dildo on first partnered try — the angle and dynamic motion are different. Add a fourth phase of partnered insertion practice before active thrusting.
Hygiene between users: sanitise plugs between sessions or use a fresh condom over the plug.
Aftercare matters. Warm flannel, water, cuddle. Training sessions are intimate — treat them like it.

Common training mistakes

Trying to "complete" the kit. The kit isn't a checklist. The right outcome is finding your comfortable size, not using all three plugs in order.
Skipping sizes. Going from small straight to large usually means a session that doesn't work and a step backwards.
Rushing the timeline. 6 weeks is a typical pace; 8–12 weeks is also normal. People who do it in 2 weeks usually didn't.
Not enough lube. Each size up demands more lube — the larger surface needs more glide.
Trying to size up when stressed or tired. Sphincter relaxation depends on overall body state. Try the bigger plug on a relaxed weekend, not a tense weeknight.
Comparing to other people. Sphincter anatomy varies. Someone else's 4-week progression isn't a benchmark.
Forgetting to clean between sessions. Each plug in the kit needs full cleaning after every use. Don't store mid-session.

Care, cleaning and hygiene

Wash every plug before and after every use with warm water and antibacterial soap or a dedicated sex toy cleaner. Solid silicone and glass plugs (no electronics, no vibration motor) can be boiled for 3 minutes for full sanitisation — especially important if the kit is shared with a partner. Store the kit in its original case or a clean dry pouch. Inspect glass plugs for chips before every use.

Anal training kit FAQ

How long does anal training take?

Most people work comfortably through a 3-piece training kit over 4–8 weeks. Some take longer; many never bother with the largest plug. There's no "correct" pace — the goal is comfortable, enjoyable anal play, not finishing the kit. Going too fast almost always causes a setback.

What sizes are in a typical anal training kit?

A typical 3-piece beginner kit starts around 2–2.5cm at the widest point and steps up to around 3.5–4cm. Larger kits go up to 4.5cm or further. 5-piece dilator kits offer more steps with smaller increments — useful for very gradual progression.

Do I need to use the biggest plug?

No. Most people find their right-fit size at the medium plug and don't bother with the large. That's a complete result. The biggest plug is an option for later if you want it, not a goal to reach.

How long should I stay at each size?

Minimum 2–3 comfortable sessions per size. "Comfortable" means easy insertion, comfortable wear, easy removal. There's no maximum — staying at one size for months and never stepping up is fine.

Can couples use an anal training kit together?

Yes — anal training kits are often bought specifically for couples preparing for receptive anal sex. The receptive partner uses the kit at their own pace; the partner-to-be follows that pace. Sanitise plugs between users or use a fresh condom over the plug.

What if a plug feels too big?

More lube first. If that doesn't fix it, step back down to the previous size for another 1–2 sessions, then try again. If after 4–5 attempts the bigger plug still doesn't work, you've found your right-fit size at the previous step.

Are anal training kits safe?

Yes — when used with body-safe materials (medical-grade silicone or borosilicate glass) and flared bases on every plug. Use generous water-based lube, progress slowly, never push through pain. Anal training is reversible, low-risk and well-tolerated.

Will anal training stretch me permanently?

No. The sphincter is a muscle that returns to baseline tone between sessions. Decades of medical evidence (including from procedures involving anal insertion) show no permanent changes in sphincter tone from normal anal play. Tone is maintained because the muscle keeps doing its job between sessions.

What lube should I use with an anal training kit?

Thick water-based lube for silicone kits. For glass training kits, any lube type works — silicone-based lasts longer and is fine with glass. Always use significantly more than you'd use for vaginal play, and reapply often. See the Naughty Hut anal lubricant range.

What's the difference between a training kit and a dilator set?

Heavily overlapping in practice. Dilator sets are usually marketed for medical use (pelvic floor therapy, post-surgery recovery) and tend to be more clinical-looking with smaller incremental steps (5 pieces, 0.3–0.5cm increments). Training kits are marketed for sexual play and tend to be more aesthetic (3 pieces, 0.5–1cm increments). Either works for either purpose.

The Naughty Hut recommendation

If you're starting from zero, buy:

A 3-piece silicone anal training kit with smallest plug under 2.5cm widest. Around $35–$70 NZD.
A 100ml+ bottle of thick water-based anal lube. Around $20–$30 NZD.

Total spend: around $55–$100 NZD for everything you need. That covers the next 6–8 weeks of anal exploration with every size you're likely to want already on hand.

Browse the full Naughty Hut anal training kits range, or related categories — individual butt plugs, jewelled butt plug sets, glass anal toys if you want a glass kit, or back to the full anal toys range. For questions about your specific situation, our in-house educator team is here to help.

Every order ships discreetly from our NZ warehouse with same/next-day dispatch and our 10% NZ price-beat guarantee.

Last updated: May 2026 · Reviewed by the Naughty Hut team