The comfort rating, not the season name, describes your night · review
The only down bag in this group: it publishes a fill power, a down content, a shell denier and a comfort and limit pair — and still names no standard.
The bottom line The lightest and the best-specified bag of the nine on materials, and still missing the number that would make its fill power meaningful. For mild-weather backpacking at 760 g it is the obvious pick here; read the 0 °C as the maker's figure, not a tested one.
An envelope-shaped hooded down bag at 210 × 75 cm in medium and 220 × 85 cm in large, net weights of 760 g and 885 g, a mesh storage bag and a compression sack, a fill of 85 % down treated to be water-repellent, a comfortable temperature above 5 °C, a limit temperature of 0 °C, 20D nylon for both fabric and lining, a YKK zip that opens from inside and out, and a bottom zip for warm nights. The title carries 650FP.
650 fill power. That describes the down: a fixed mass of it lofts to 650 cubic inches. It is a quality measure, and a good one at this price.
And the fill weight is not published. Fill power without fill weight cannot tell you how warm the bag is. The listing gives the net weight of the whole bag — 760 g including shell, zip, hood and sack — which is not the same thing at all. Two bags at 650 fill power with different amounts of down inside will behave completely differently.
Above 5 °C comfortable, 0 °C limit. Two figures, correctly separated, and no standard named for either. Under EN 13537 or ISO 23537 they would come from a heated mannequin under fixed conditions — an indication rather than a promise. Here they are the maker’s own.
20D nylon on both faces is thin, which is how the bag reaches 760 g. It is also what down needs: a tight, light weave that clusters cannot work their way through. The water-repellent treatment on the down itself is the other half of that answer, since damp down stops lofting.
Ask for the fill weight in grams. It is the one figure that would turn a good specification into a complete one, and any seller with the maker’s data sheet will have it.
Selling between 110 € and 140 € across the German, French, Italian and Spanish Amazon stores when this page was checked.
It also sells on the British Amazon store in the local currency, which the range above does not cover — that range counts euro stores and nothing else.
Nothing came back from the American Amazon store, so the buy link there opens a local search instead of a page that is not there.
Every figure in this section is what Keepa returned on the day this page was last updated. Prices and offers change without notice.
Prices quoted in this text were read on 6 September 2026. The live price is at the top of the page.
| Comfort rating | Above 5 °C — stated as the comfortable temperature; no standard is named, so it is an unstandardised figure |
|---|---|
| Limit rating | 0 °C — stated as the limit temperature; no standard is named, so it is an unstandardised figure |
| Standard quoted | None named — neither EN 13537 nor ISO 23537 appears in the listing |
| Fill power | 650 fill power — stated in the title |
| Fill weight | Not published on the listing — an 85 % down content and a net bag weight are published, never the grams of down inside |
| Down or synthetic | Down — stated as an 85 % down fill, treated to be water-repellent |
| Shell denier | 20D nylon — stated for both the outer fabric and the lining |
| Baffle construction | Not published on the listing |
| Packed size | Not published on the listing — a mesh storage bag and a compression sack are supplied, with no packed dimensions |
| Weight | 760 g in the medium size and 885 g in the large — stated as the net weight |
| Amazon reference | B08S2RVLL1 (same reference on 5 Amazon marketplaces) |
| EAN | 6927595774410 |
Fill power measures the volume a fixed mass of down lofts to — how good the down is. It says nothing about how much is in the bag. A 650 fill power bag with 200 g of down and one with 500 g are completely different products, and this listing publishes the quality and not the quantity.
The fill is 85 % down cluster and the rest feather. Down clusters trap air; feathers add weight and quills. 85 % is a normal figure at this price, and stating it is more than most listings do.
Mummy · 400 GSM synthetic · comfort +4 °C and limit -2 °C stated · 1.55 kg 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.
≈ 23 €
Mummy · 350 GSM double-layer fill · comfort around 0 °C stated · 1900 g · 24 × 30 cm packed · 230 × 82 × 55 cm
A large mummy bag that names a comfort temperature of around 0 °C, publishes weight, packed size and a full cut, and names no standard behind the figure.
Best for: Taller sleepers camping in the cold shoulder seasons, where a 230 cm bag and a stated comfort figure matter more than carried weight.
≈ 70 €
Mummy · 300 g/m² fill · 1550 g · 38 × 23 cm packed · 215 × 85 (55) cm · a pair of unlabelled temperatures
A mummy bag that publishes weight, packed size and a tapered cut, and puts two temperatures in its title without saying which is which.
Best for: Cold-weather camping where a 1550 g bag with a thermal collar and a known taper is what is wanted.
≈ 46 €
