Sleeping Bag Spec Comparison
This page publishes the sleeping bag category baseline — what temperature ratings and weights actually look like across the bags on sale — so you can place any bag you are considering against the distribution rather than against marketing copy.
The Category Baseline
Computed from 60 sleeping bags with published specification data. Figures are quartiles: a quarter of bags sit below the P25 value, half below the median, three-quarters below P75.
| Specification | Coverage | P25 | Median | P75 |
|---|---|---|---|---|
| Temperature rating (°F) | 75% | 6 | 20 | 40 |
| Weight (kg) | 90% | 1.35 | 1.70 | 2.30 |
| Season rating | 55% | 3 | 4 | 4 |
Temperature rating comes from a structured manufacturer specification field in every case we found — the strongest provenance of any figure on this site. Season rating comes from marketing text and is reported only for context.
How to Place a Bag
Take the bag you are considering, find its stated rating and weight, and read both against the table.
- Rating at or below 6°F puts a bag in the coldest quarter of the category.
- Weight at or below 1.35 kg puts it in the lightest quarter.
- A bag in the lightest quarter and the coldest quarter is doing something genuinely unusual — and is worth checking carefully, because that combination is also what an inflated rating looks like.
- A bag at 20°F and 1.7 kg is precisely typical. Nothing about its specifications distinguishes it.
Worked example. A bag rated 15°F weighing 1.2 kg sits in the colder half on rating and below the lightest quarter on weight. That is a genuinely efficient combination — typical of a down bag. The same 15°F rating at 2.4 kg sits above the heaviest quarter, which usually indicates synthetic fill and a lower price.
Why There Is No Product Leaderboard Here
Most comparison sites publish a ranked table of named products. We tried, and the result did not survive our own checks.
When we ranked individual bags by warmth per kilogram, the top of the list filled with listings whose published weights were implausible — a double sleeping bag recorded at 450 g, warm-weather bags carrying winter ratings, and children’s sleep products categorised alongside adult bags. Every one of those figures came from a real specification field. They were simply wrong.
Median and quartile figures are resistant to this: a handful of bad values barely moves a median, while they dominate the top of a leaderboard by definition, because a leaderboard sorts for extreme values. Publishing the distribution is therefore something we can stand behind, and publishing a ranked product table is not.
This is the coverage and plausibility discipline described in our methodology applied to our own output. It costs us the most clickable page format available, which is rather the point.
Reading the Rating With Appropriate Skepticism
The temperature ratings above are structurally sound and interpretively weak. Not one bag in our dataset cited ISO 23537 or EN 13537, the standards that specify how a rating is measured. Every figure is therefore a bare number with no stated basis — it may be a comfort rating, a limit rating, or an in-house estimate.
The practical consequence is that the P25/median/P75 bands describe what brands are willing to claim, not verified warmth. That is still useful — it tells you whether a claim is unusual for the category — but it is not a temperature measurement. The full explanation is in what a temperature rating actually promises.
The Products These Figures Come From
Of the 60 bags in this category, 26 publish every figure in the baseline above. The 10 shown here are listed by price tier, then alphabetically — this is not a ranking, and a product appearing here means its listing is complete, nothing more. 1 listing is held back for a published figure far outside the category’s own range — a data defect rather than an unusual product.
| Product | Brand | Price Tier | Temp rating (°F) | Weight (kg) | Season rating | Key Details |
|---|---|---|---|---|---|---|
 Clostnature Lightweight Camping Sleeping Bag for Adults and… |
Clostnature | <$30 | 14 | 1.36 | 4 | Synthetic · Rectangular · Zipper |
 Elevon Double Sleeping Bag for Adults with 2 Pillows |
Elevon | <$30 | 41 | 1.36 | 3 | Cotton · Rectangular · Drawstring, Zipper |
 Friendriver XL Size Upgraded Version of Camping Sleeping… |
Friendriver | <$30 | 10 | 1.36 | 4 | Polyester · Rectangular · Zipper |
 MEREZA Sleeping Bags XL for Adults Mens Large Wide Sleeping… |
MEREZA | <$30 | 28 | 1.81 | 4 | Synthetic · Rectangular · Zipper |
 oaskys Camping Sleeping Bag – 3 Season Warm & Cool Weather… |
oaskys | <$30 | 50 | 1.36 | 3 | Polyester · Rectangular · Zipper |
 Farland Sleeping Bags for Adults |
FARLAND | $30-75 | 32 | 1.81 | 4 | Silk-Like Cotton · Envelope · Zipper |
 FARLAND Sleeping Bags for Adults Cold Weather |
FARLAND | $30-75 | 10 | 2.83 | 3 | Polyester · Rectangular · Zipper |
 Kanyak Camping Sleeping Bag |
Kanyak | $30-75 | 46 | 1.91 | 4 | Polyester · Semi-Rectangular · Zipper |
 MEREZA 0 Degree Winter Sleeping Bag for Adults Kids with… |
MEREZA | $30-75 | 40 | 2.99 | 4 | Polyester · Rectangular · Zipper |
 SOULOUT 3-4 Season Sleeping Bag for Adults & Kids |
SOULOUT | $30-75 | 32 | 1.91 | 4 | Polyester · Rectangular · Zipper |
Key Details are the listing’s own structured specification rows — fill material type, shape, closure type — reproduced as published.
Notes on the Products at the Edges
Most of the products above sit inside the interquartile range on every figure, which is what the baseline already describes. These are the ones it does not: each is outside P25 or P75 on at least one published figure. The position is computed from the category statistics; the explanation is what the listing itself states.
MEREZA 0 Degree Winter Sleeping Bag for Adults Kids with… — MEREZA, $30-75
Weight of 2.99 kg sits above the category P75 of 2.30 kg. A rectangular winter bag of 32.3 by 90.5 inches, sized for campers up to 7 feet — the mass is dimensions and fill together, not warmth alone.
FARLAND Sleeping Bags for Adults Cold Weather — FARLAND, $30-75
Weight of 2.83 kg sits above the category P75 of 2.30 kg. 86.6 by 32.68 inches with a microplush fleece lining behind 290T nylon: a lined winter bag rather than a compressible one.
oaskys Camping Sleeping Bag – 3 Season Warm & Cool Weather… — oaskys, <$30
Temp rating of 50 °F sits above the category P75 of 40 °F. The listing describes a 3-season bag designed for 10 to 20 degrees Celsius, the warm end of this category’s ratings.
Specifications are the manufacturer’s published values as scraped for this corpus, not our own measurements — the same source, and the same limits, as the baseline above. Prices move daily, so we show the tier rather than an amount. Links to Amazon are affiliate links.
What the Category Does Not Publish
- Fill power — effectively absent from listings, and the main determinant of a down bag’s efficiency.
- Fill material — stated too inconsistently to support a baseline.
- Packed size — rarely published usefully, though it constrains pack choice as much as weight does.
- Rating basis — never stated, as above.
Using This Page
- Shortlisting: use the bands to spot bags that are unusually light for their claimed rating, then investigate those claims.
- Sanity-checking a listing: a bag well outside these bands in both directions at once deserves skepticism before it deserves enthusiasm.
- Budgeting weight: if your bag is above 2.33 kg, it is in the heaviest quarter of the category, and that is usually the easiest kilogram to remove from a pack.
FAQ
Why quartiles rather than an average?
Because averages are destroyed by bad data. A single mis-parsed weight moves a mean substantially and leaves the median untouched. Given the error rates we have measured in retail specification data, medians and quartiles are the only figures we are willing to publish.
Will you ever publish a ranked product table?
Only when we can filter implausible values reliably enough that the top of the list is trustworthy. A leaderboard sorts for extremes, so it needs much cleaner data than a baseline does.
How many bags is this based on?
60 bags with usable specification data, of which 45 publish a temperature rating and 54 a weight. Coverage is shown per specification because it varies.
Does this include children’s bags?
The underlying category as retailers define it does include some, which is one of the contamination problems that makes product-level ranking unreliable here.