Ultralight at a glance
- Ultralight
- Base weight under 10 lb
- The big three
- Pack, shelter, sleep system
- Trades away
- Durability, camp comfort, margin
Where the line is drawn
The commonly used line is a base weight under 10 lb, with lightweight sitting under 20 and superultralight under 5. The numbers are conventions rather than rules, and the underlying idea is more useful than the threshold: carrying less makes you faster, less tired at the end of a day, and less likely to be injured by the load itself.
The big three
Nearly all of the weight lives in three items. Pack, shelter and sleep system make up the bulk of a base weight, and going from a 5 lb pack, a 5 lb tent and a 4 lb bag to a 2 lb pack, a 2 lb trekking-pole shelter and a 1.5 lb quilt is most of a 10 lb saving before you've touched anything else. The rest is a long tail of small decisions and diminishing returns.
What it costs you
What it costs is real and worth being honest about. Ultralight gear is generally less durable, less comfortable in camp, and less forgiving of a bad night, and it usually costs more. The approach also depends on skill: a frameless pack demands careful packing, a trekking-pole shelter demands a good pitch, and less insulation demands accurate forecasting. It's a good direction for most hikers and a bad destination for some.
How people actually get under ten pounds
Almost entirely through the big three. A frameless or minimal-frame pack around 2 lb, a trekking-pole shelter around 1.5 lb, and a quilt plus pad around 2.5 lb puts you at roughly 6 lb before anything else. Everything remaining has to fit into three or four pounds, which is achievable without exotic gear if the list is disciplined.
What it is not is buying the lightest version of everything you already own. The step change comes from choosing different categories of item, and each of those choices carries a real trade you should be able to name.
Where it stops being sensible
In conditions with no margin. Sustained cold, sustained rain, remote country a long way from a bail-out, or a forecast that could turn: those are the places where the comfort ultralight trades away is also the safety margin. Experienced ultralight hikers carry more in those conditions, which is the tell.
It also assumes skill. A trekking-pole shelter pitched badly in wind is worse than a cheap freestanding tent, and a thin quilt only works if you have the pad and the layering to back it up.
What this means when you're choosing
- Pack, shelter and sleep system first, which are most of the weight
- Whether the conditions you hike in leave room for a thinner margin
- Durability, since ultralight gear is generally a consumable
The common mistake
Cutting the safety margin instead of the weight
The legitimate version of ultralight is lighter versions of the things you need. The dangerous version is leaving out the shell, the insulation or the light. Weight saved by not carrying warmth is not a technique, it is a gamble on the weather.
Common questions
What base weight counts as ultralight?
Under 10 lb is the usual line, with lightweight under 20 and superultralight under 5. They're conventions rather than official definitions, and nobody checks.
Is ultralight gear less safe?
It has less margin, which is a different thing. Thinner insulation and lighter shelters demand better forecasting and better skills, so the approach is safe for people who've built those and thin for people who haven't.