100mm vs 72mm vs king size: what length changes
Quick answer: 72mm is a short cigarette, 84mm (king size) is the U.S. standard, and 100mm is a longer cigarette with a longer filter. Longer cigarettes burn longer but deliver a cooler, more diluted draw.
Format names — 72s, 84s, 100s, super slim — describe geometry, not strength. Getting the geometry right matters more than most people expect, because it changes how long a cigarette lasts and how often you reach for the next one.
The sizes in practice
| Format | Length | Typical feel |
|---|---|---|
| 72mm ("shorts") | 72mm | Fast burn, stronger per puff |
| King size | 84mm | Standard U.S. cigarette |
| 100s | 100mm | Longer, cooler draw, longer filter |
| Super slim | ~84mm but ~5mm wide | Tight draw, quick burn |
Why 100s feel lighter
A 100mm cigarette is not "more tobacco in a straight line" — the extra length is largely filter. That longer filter cools the smoke and dilutes each puff, which is why 100s are often described as smoother even at the same strength rating.
Why super slims burn fast
Super slim cigarettes have a narrower diameter, so there is less tobacco in the column. Less tobacco means less burn time. If you are used to king size, a super slim carton will disappear noticeably faster — worth factoring in when comparing carton prices.
How to choose
If you have smoked the same format for years, keep it. If you are switching, change one variable at a time: format or strength, not both. Buy a single carton to test rather than a multi-carton order.
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Frequently asked
What is king size?
84mm — the standard U.S. cigarette length.
Do 100s have more tobacco?
No. The extra length is mostly filter, which is why the draw feels cooler and lighter.
Are super slims shorter?
Usually the same length as king size but much narrower, so they burn faster.