Ranked lists

Two constraints, applied in order. First, the item has to publish a lab comfort figure — not a number the marketing department picked, an ISO 23537 or EN 13537 comfort rating measured on a mannequin. Second, it has to weigh under two pounds. What survives both is a short list, and that is the point: most of the bags people call ultralight publish no lab rating at all, so there is nothing to rank them by except trust.

Ranked on: Ranked by published ISO or EN comfort rating, coldest first, among bags and quilts under 32 oz that publish one at all.

Almost no quilt maker publishes a lab temperature rating, so comparing quilts on their stated temperature means comparing marketing departments. What most of them do publish is fill power and fill weight, and multiplying those gives the volume of loft the down in the quilt can produce — the physical thing you are paying for. Dividing that by price ranks quilts on something checkable.

Ranked on: Ranked by loft budget (fill weight × fill power ÷ 1000) divided by approximate price, for down quilts that publish both figures.

A sixteen-ounce ceiling is the line most backpackers draw, and R-value is the only number that says whether a pad will keep the ground from taking your heat. Since 2020 every serious maker tests to the same ASTM standard, which means for the first time these figures can honestly be put in one column. The results reorder the category: the warmest pad under a pound is not the most famous one.

Ranked on: Ranked by ASTM F3340 R-value, highest first, among pads weighing under 16 oz in their headline size.

Once a mattress lives in a vehicle, weight stops being a constraint and two things start to matter instead: how thick it is, and how much heat the ground takes back. That second one is routinely ignored on camping mattresses, and it shouldn't be — a plush four-inch mat with an R-value of 2.4 will feel colder on a 40-degree campground than a thinner one rated at 7.

Ranked on: Camping mattresses ranked by ASTM F3340 R-value, highest first. Weight is not a ranking factor because these never go in a pack.

Three hundred and fifty dollars is roughly where the mainstream stops and the cottage and premium brands begin, and the interesting thing about the bags below that line is how many of them publish proper lab ratings. The expensive end of this catalogue is dominated by makers who publish nothing but their own number; the affordable end is where ISO figures are normal.

Ranked on: Bags and quilts under $350 rated to 35 °F or colder, ranked by the coldest published figure — lab comfort rating where one exists.

R 5.5 is where the pairing table stops recommending a three-season pad, and it is also roughly where prices jump. What is worth knowing before spending the money is that two pads stacked add up: a foam pad at R 2 under an air pad at R 4.5 gives you about R 6.5 for sixty dollars and fourteen ounces, which is a real alternative to a single winter pad.

Ranked on: Pads with an R-value of 5.5 or above, ranked warmest first. 5.5 is the floor for reliably sleeping on frozen ground in this catalogue's pairing table.

Every pad spec sheet gives you warmth and weight separately and lets you do the division yourself. Doing it produces a ranking that has very little to do with price and quite a lot to do with how the insulation is built — and it puts a couple of pads near the top that almost nobody talks about.

Ranked on: Ranked by ASTM F3340 R-value divided by the headline size's weight in ounces, highest first.