Slim, mini and large describe the pouch’s physical size, not its strength — and the difference is bigger than most people assume. On the manufacturer’s own figures a mini pouch targets about 0.5 g and a large about 0.9 g, nearly double. Where a country caps nicotine per gram rather than per pouch, that size difference doubles the legal dose too.
Format is the spec on a can that gets the least attention and changes the most. It decides whether the pouch is invisible under your lip or obvious, how long it holds its shape, and — in some markets — how much nicotine is legally allowed inside it. Here is what the words actually mean, measured, with the sources.
What the format names mean, in millimetres and grams
The clearest published definitions come from a patent specification rather than a marketing page. Swedish Match North Europe’s European patent EP3087852A1, filed in 2015, sets out the commercial reference formats it was designing against. Its “Ref. 1” has a “Target weight per pouched product [g] 0.5 ± 0.2”, a “Maximum length of product [mm] 27” and a “Maximum width of product [mm] 14” — and the patent states plainly that “The format of Ref. 1 is, when sold commercially, referred to as ‘mini’.” Its “Ref. 2” targets “0.9 ± 0.2” g at 34 mm by 18 mm, and “The format of Ref. 2 is, when sold commercially, referred to as ‘large’.”
The same document gives the wider landscape: “Some typical shapes (length x width) of commercially available oral pouched smokeless tobacco products are, for instance, 35 mm x 20 mm, 34/35 mm x 14 mm, 33/34 mm x 18 mm, and 27/28 mm x 14 mm”, with a thickness “normally within the range of from 5 to 7 mm” and a total weight “typically within the range from about 0.3 to about 3.5 g, such as from about 0.5 to 1.7 g, per pouched product”. Slim is named separately — the patent’s user panel consisted of “57 snus users normally using pouched snus products having the so-called ‘slim’ format”.
So the geometry, in one sentence: mini is short and narrow, large is long and wide, slim is long and narrow. Slim is the compromise format — it keeps the length that makes a pouch sit stably in the lip pocket while dropping the width that makes it visible.
For a tobacco-free pouch measured by a regulator rather than its maker, FDA’s technical review of the on! PLUS products records a “portion weight target of 0.714 g” with “a portion length and width target of 27.5 mm and 10.5 mm, respectively”, and that “Each container contains 14 pouches.” That is a useful calibration point: 10.5 mm wide is narrower than any of the tobacco formats in the patent, and 27.5 mm is mini length. Nicotine pouch makers have been shrinking the width, not the length.
The comparison table
| Format | Typical size | Target weight | Where the figure comes from | What it feels like |
|---|---|---|---|---|
| Mini | 27 × 14 mm max | 0.5 ± 0.2 g | EP3087852A1, “Ref. 1” | Genuinely hard to see; shortest-lived |
| Slim | ~34 × 14 mm | Not separately published | EP3087852A1 names the format; dimensions inferred from the 34/35 × 14 mm shape listed | The default for modern pouches — stable, discreet |
| Large / regular | 34 × 18 mm max | 0.9 ± 0.2 g | EP3087852A1, “Ref. 2” | Noticeable under the lip; most material |
| Extra slim (pouch category) | 27.5 × 10.5 mm | 0.714 g | FDA technical project lead review, on! PLUS | Narrow and dense rather than small |
| Category-wide range | 5–7 mm thick | 0.3–3.5 g, usually 0.5–1.7 g | EP3087852A1 | — |
One caveat I want on the record: the mini and large figures are from a snus patent, so they describe tobacco portions. Nicotine pouch makers borrowed the vocabulary without borrowing a standard, which brings us to the real problem.
Nobody agrees what these words mean
There is no industry definition of slim, mini or large, and no regulator has written one. What there is instead is each company using its own vocabulary, sometimes inconsistently within a single range. White Fox, made by GN Tobacco in Enköping, lists Mint, Double Mint and Peppered Mint as “Slims Portion”, Black Edition as “Slims Portion”, and Full Charge as “Regular Portion” — two format names across five products, with no dimensions or weights published for any of them. ZYN’s own US site tells you there are “20 pouches per can” and lists strengths, but names no format at all. VELO’s landing page publishes neither.
That silence has a practical consequence. Because pouch weight is not on the can, and format names are not defined, you cannot work out from the packaging how much material is going under your lip — which matters more than it sounds, for the reason in the next section.
The German Federal Institute for Risk Assessment measured the spread rather than trusting the labels. In its 2022 opinion it reported a median pouch weight of 0.6 g, alongside Dutch RIVM data spanning 0.25–0.8 g per pouch and a further study finding 0.33–1.13 g. A category where the heaviest pouch is four times the lightest, with no weight printed anywhere, is a category where “one pouch” is not a unit of anything.
Why format is a dose question, not a comfort question
This is the part that surprises people. Some countries cap nicotine per pouch; others cap it per gram. Where the cap is per gram, the format sets the ceiling.
Finland’s limit, in force since 1 August 2025, is 16.6 mg per gram — and the Ministry of Social Affairs and Health does the arithmetic itself, stating that a half-gram pouch may contain at most 8.3 mg while a one-gram pouch may contain 16.6 mg, with a “fairly typical” 0.7 g pouch landing just under 12 mg. Same law, same brand, three different legal doses depending on which format you pick up. Denmark went the other way: its 2025 order, in force 1 July 2025, says nicotine pouches “må maksimalt indeholde 9,0 mg nikotin pr. pose” — a flat per-pouch ceiling, under which a large pouch is simply weaker per gram than a mini one. Poland’s cap is 20 mg/g, so it behaves like Finland’s. Sweden has no statutory ceiling at all.
So format changes the dose in Finland and Poland, and changes the concentration in Denmark. Neither is signposted on the can. We have the full picture of the strength labelling mess in mg per pouch vs mg per gram and the brand-by-brand comparison in every brand’s strength scale.
Does a bigger pouch deliver more?
More material, yes. Proportionally more nicotine into you, no — and the published data is blunt about that. The dissolution work in Separations in 2022 compared a large white snus portion with a tobacco-free pouch and found the pouch released more in absolute terms despite containing less: “General PSWL contains 33% more nicotine per pouch than ZYN Dry Smooth does. However, the absolute nicotine release was 32% higher in ZYN Dry Smooth.” Release from the large snus portion was “9.2 ± 4.7% and 29.9 ± 11.2%” at 15 and 60 minutes, against “15.3 ± 7.2% and 50.1 ± 14.5%” for the pouch. Two of that paper’s four authors were Swedish Match employees and a third had received company funding, which is worth knowing when reading a favourable comparison of the company’s own pouch.
The independent version tells the same story from a different angle: a study funded by the German Federal Institute for Risk Assessment measured extraction of 38%, 24% and 52% from pouches labelled 6, 20 and 30 mg — not proportional, not predictable, and not something a format name will tell you.
My reading: pick format for fit and duration, and pick strength separately from the milligram figure, knowing that figure is itself unreliable. Treating a large pouch as “the strong one” is the wrong mental model.
Which format suits whom
- New to pouches: slim. It is what the category is built around, it stays where you put it, and it is the format most brands’ lowest strengths come in.
- Wants it invisible: mini. Half the weight of a large, short enough not to bulge. The trade is that it is over sooner.
- Coming from loose or large-portion snus: large or regular. The mouthfeel is closest to what you already know.
- Long sessions: slim or large over mini — more material means the release curve runs longer, even though you will still throw away roughly half of it.
- Small mouth, crowded lip pocket: the narrow pouch formats at 10.5 mm wide, rather than a mini, if you want to keep the duration.
What the format on the can does not tell you
Four things, all of which matter more than the format name: the pouch weight, which is almost never printed; the basis of the milligram figure, which most brands do not state; the pH, which drives how hard it bites and which no brand publishes; and the moisture, which decides how fast it starts. The German risk-assessment body’s 2022 opinion found nicotine content “declared clearly on only about a third” of products it looked at, and noted that “some manufacturers meant the nicotine content per pouch and others per gram. However, this fact is not apparent to the consumer.”
FAQ
Is slim the same as mini? No. Slim is long and narrow; mini is short and narrow. Mini is roughly half the target weight of a large portion; slim sits between.
Is “all-white” a format? No — that describes the pouch material and colour, not the size. We unpack the term in what ‘all-white’ really means.
How many pouches in a can? It varies by format and brand, and it is not standardised: ZYN states 20 per can, while FDA’s review of on! PLUS records 14.
Does a mini pouch mean less nicotine? Not necessarily. In a market that caps per gram it legally must; in a market that caps per pouch, or has no cap, a mini can carry the same milligram figure as a large in a smaller package — which makes it more concentrated, not weaker.
Which format lasts longest? More material lasts longer, so large over slim over mini. But at 60 minutes about half the nicotine is still in the pouch whichever you chose.
Sources
- Swedish Match North Europe AB, EP3087852A1, Oral pouched product having a rectangular shape, priority 17 April 2015, published 2 November 2016 — mini and large reference formats, dimensions, thickness, weight range, pouch material, slim format named.
- US Food and Drug Administration, Technical Project Lead review, Helix Innovations on! PLUS products (PM0009121 series), § 2.1 and § 3.1.1 — 0.714 g portion weight target, 27.5 × 10.5 mm, 14 pouches per can, 6 mg and 9 mg.
- Knopp MM, Kiil-Nielsen NK, Masser AE, Staaf M. Introducing a Novel Biorelevant In Vitro Dissolution Method… Separations 2022;9(2):52 — release percentages and the PSWL/ZYN comparison. Two authors employed by Swedish Match North Europe AB, which markets both products compared; a third author funded by the same company.
- Mallock-Ohnesorg N et al., Frontiers in Pharmacology 2024, German Federal Institute for Risk Assessment grant BfR-CPS-08-60-0102-02.P606 — extraction of 38%, 24% and 52% at labelled 6, 20 and 30 mg.
- Bundesinstitut für Risikobewertung, Opinion 023/2022 — median pouch weight 0.6 g, RIVM range 0.25–0.8 g, further study 0.33–1.13 g, declaration found clear on about a third of products, per-pouch versus per-gram confusion.
- Sosiaali- ja terveysministeriö (Finland) — 16.6 mg/g cap in force 1 August 2025, with the ministry’s own 8.3 mg / 16.6 mg / sub-12 mg worked examples.
- Retsinformation (Denmark), BEK nr 249 af 04/03/2025 § 2, in force 1 July 2025 — “Nikotinposer må maksimalt indeholde 9,0 mg nikotin pr. pose.”
- Ministerstwo Zdrowia (Poland) — 20 mg/g cap, Ustawa of 21 May 2025, Dz.U. 2025 poz. 799.
- Manufacturer format naming as published: GN Tobacco / White Fox (“Slims Portion”, “Regular Portion”, no weights), us.zyn.com (20 pouches per can, no format names), velo.com (none published).
Last verified 28 September 2026.