The comfort rating, not the season name, describes your night · review
Five bullets, five facts and no padding: a 20 °F mummy bag of 82 by 33 inches with a drawstring hood, a brushed tricot liner and an anti-snag zip with contrasting webbing.
A 20 °F cold weather mummy sleeping bag with a no-snag zipper, 82 by 33 inches, in olive green.
Amazon Basics states a 20-degree bag with a mummy shape and an adjustable drawstring hood for heat retention in cold weather; a robust polyester shell and a brushed tricot liner; a carry bag for storage and transport; an anti-snag zipper with contrasting orange webbing to prevent the fabric catching; and dimensions of 82 by 33 inches, providing space for most adults.
No standard. No fill named. No fill weight. No denier. No baffles. No packed size. No weight.
The gap this shelf’s buying tip exists for.
Check which standard the maker names beside the temperature figures, it says, because a bag quoting a bare number cannot be lined up against one quoting EN 13537 — and the difference is not in your favor.
Not one of the seven American bags in this group names a standard. So the figures rank these bags against each other and against nothing else.
Twenty Fahrenheit is about minus seven Celsius, which on a tested bag would normally be a limit rather than a comfort figure.
Shell and liner, and nothing between them.
Polyester outside, brushed tricot inside, and the insulation unnamed — not as hollow fiber, not by brand, not by weight.
This shelf’s introduction splits this shelf on insulation first. A bag with no fill described can only be judged on its temperature figure, and that figure has no standard.
The one detail here that was designed rather than specified.
A bag zip is operated in the dark by someone half asleep. A contrast color makes the line findable; anti-snag stops the shell being eaten, which is what eventually tears a bag.
Four bags in this group name an anti-snag zip. This is the only one that publishes a contrast color for it.
Published, with what it means.
Not a height limit — the listing says it provides space for most adults — but the bag’s own length and width, which is the figure a buyer can measure themselves against.
Three bags in this group publish a height limit instead: 7 feet, 6 ft 2 in and 5 ft 11 in. Two publish neither.
Amazon Basics’ instructions carry the washing and the rating. Nothing here replaces them, and nothing on this page describes any product as safe.
The American Amazon store was listing it at about $43 at the time of writing.
Every figure here is what Keepa held on the day this page was last revised. Offers and prices shift without warning.
Prices quoted in this text were read on October 8, 2026. The live price is at the top of the page.
| Comfort rating | Not published as a comfort figure. The bag is published as 20 °F |
|---|---|
| Limit rating | Not published |
| Standard quoted | None |
| Fill power | Not applicable — synthetic fill |
| Fill weight | Not published |
| Down or synthetic | Synthetic. The fill is not named; the shell is polyester and the liner brushed tricot |
| Shell denier | Not published. A robust polyester shell is stated |
| Baffle construction | Not published. A mummy shape with an adjustable drawstring hood is stated |
| Packed size | Not published. A carry bag is included |
| Weight | Not published. The shipping weight is about 2 kg (4.4 lb) |
| Amazon reference | B0BKKVWMT2 |
| EAN | 0840095899772 |
Only what the maker intends by it. This shelf's buying tip is written for this: check which standard the maker names beside the temperature figures, because a bag quoting a bare number cannot be lined up against one quoting EN 13537, and the difference is not in your favor. Not one of the seven American bags in this group names a standard, so the figures here rank them against each other and nothing else. Twenty degrees Fahrenheit is about minus seven Celsius, which on a tested bag would normally be a limit rather than a comfort figure.
Because a sleeping bag zip is operated in the dark by someone half asleep. Contrasting orange webbing on an olive bag is the detail that makes the zip line findable by touch and by eye, and anti-snag is the other half — a zip that catches the shell is the commonest annoyance on a bag and eventually tears it. Four bags in this group name an anti-snag zip; this is the only one that publishes a contrast color for it. It is a small thing that was clearly designed rather than specified.
The listing does not say. It names the shell as polyester and the liner as brushed tricot, and the insulation between them is never described — not as hollow fiber, not as a named synthetic, not by weight. This shelf's introduction splits the shelf on insulation first: down rated by fill power and fill weight, synthetic heavier and bulkier for the same rating but better when damp. A bag with no fill described is a bag that can only be judged on its 20 °F figure, and that figure has no standard behind it.
Close prices, same category: comparable camping gear. We keep only the specifications all of them publish, because a column with gaps compares nothing.
| Model | Price | Comfort rating | Limit rating | Standard quoted | Fill weight |
|---|---|---|---|---|---|
| Amazon Basics AMZ-3382SB mummy bag | $43 | Not published as a comfort figure. The bag is published as 20 °F | Not published | None | Not published |
| MEREZA E26H80 winter bag | $32 | Published as 40 °F in the second bullet, while the title publishes 0 Degree. The two are forty degrees apart | Not published | None | Not published for the bag. The supplied pillow is published at 220 g (7.8 oz) of plush filling — the only fill weight figure in this group |
| VENTURE 4TH V4-02-XXL three-season bag | $55 | Not published as a comfort figure. The bag is published as comfortable in temperatures from 30 to 70 °F | Not published | None | Not published |
| JEAOUIA SLP-07 three-season bag | $25 | A design temperature of 50–68 °F — 10 to 20 °C (50 to 68 °F), published as a range rather than a figure | A recommended limit temperature of 41–77 °F. The top of that range is warmer than the top of the comfort range, which is the reverse of how a limit works | None — as on all seven American bags in this group | Not published |
A straightforward cold-weather mummy bag with nothing to decode
Amazon reports what buyers took in the month before this page was last checked: at least 100.
The figure is a floor, rounded by Amazon, and read through Keepa — it says what buyers picked, not what a maker claims.
Specifications: the manufacturer sheet for camping and hiking gear and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.
Mummy · 400 GSM synthetic · comfort +4 °C (39 °F) and limit -2 °C (28 °F) stated · 1.55 kg (3.4 lb) total · compression sack · no standard named
The only bag here to publish a comfort and a limit figure separately — and, like every other bag in this group, it names no standard behind them.
Best for: Three-season camping where a stated comfort and limit pair matters more than a published packed size.
Mummy · 300 GSM cotton and hollow-fiber fill · comfort 15 °C (59 °F) to 20 °C (68 °F) · about 1300 g (45.9 oz) · 35 × 25 cm (13.8 × 9.8 in) packed
A three-season mummy bag that publishes weight, packed size and fill density, and puts its comfort range at 15 °C (59 °F) to 20 °C (68 °F) with no standard behind it.
Best for: Spring to autumn trips where about 1300 g (45.9 oz) into a 35 × 25 cm (13.8 × 9.8 in) roll is the constraint that matters.
0 °F, no standard · 82 × 32 in, to 6 ft 2 in · Coletherm fill · quilting against cold spots
The coldest figure in this group at 0 °F, and the only bag here that publishes a quilting construction against cold spots, a named insulation, a draft tube and a box foot together.
Best for: A genuinely cold night in a tent, for a camper up to six foot two
≈ $94
