The comfort rating, not the season name, describes your night · review
A mummy bag that publishes weight, packed size and a tapered cut, and puts two temperatures in its title without saying which is which.
The bottom line Well described everywhere except its temperature claim. The 1550 g, the 38 × 23 cm pack and the thermal collar are the reasons to consider it; the unlabelled pair of figures in the title is not a rating to plan on.
A polyester mummy bag weighing 1550 g, a packed size of 38 × 23 cm, a lining described as breathable and rustle-free at a thickness of 300 g/m², reinforced insulation at cold-sensitive body zones, a thermal collar inside the bag, a cut of 215 × 85 (55) cm, and a stuff sack with compression straps. The title carries -20 °C and -5 °C.
Neither is labelled. On a bag tested to EN 13537 or ISO 23537 you would expect a comfort figure and a limit figure, measured on a heated mannequin, with the standard named beside them. Here you get a pair in square brackets and no standard.
Fifteen degrees separate them, and the whole character of the bag depends on which is which. We have recorded both lines as unstated for that reason rather than guessing.
A thermal collar closes the bag above the zip and around the neck. Without one, every movement pumps warmed air out at the shoulders. It is the feature most worth having on a bag bought for cold nights, and this listing names it.
215 cm long, 85 cm at the shoulder, 55 cm at the foot. That is enough to check the fit before buying, which very few listings on this shelf allow.
Ask the seller which of -20 °C and -5 °C is the comfort figure. If the answer is -5 °C, this is a cold three-season bag; if it is -20 °C, it is not, and nothing published supports it.
Selling between 46 € and 51 € across the German, French, Italian and Spanish Amazon stores when this page was checked.
Catalogued on the British Amazon store with nobody selling it: the reference is there, the offer is not.
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 | Not stated as a comfort figure — the title publishes the pair -20 °C and -5 °C with neither labelled, and no standard is named |
|---|---|
| Limit rating | Not stated as a limit figure — the same unlabelled pair, -20 °C and -5 °C, is all that is published |
| Standard quoted | None named — neither EN 13537 nor ISO 23537 appears in the listing |
| Fill power | Not published on the listing — fill power describes down, and this bag is stated as polyester |
| Fill weight | No weight published — the maker publishes 300 g/m², a fill density, not the grams of insulation in the bag |
| Down or synthetic | Synthetic — stated as polyester |
| Shell denier | Not published on the listing — the lining is described as breathable and rustle-free, with no fabric or yarn weight |
| Baffle construction | Not published on the listing — reinforced insulation at cold-sensitive body zones and a thermal collar are named; the baffle pattern is not |
| Packed size | 38 × 23 cm — stated, with straps to compress the stuff sack further |
| Weight | 1550 g — stated, with no label saying what is counted |
| Amazon reference | B07K5DTGLP (same reference on 5 Amazon marketplaces) |
| EAN | 4260544971945 |
It is a filled tube that closes around the neck inside the bag, above the zip. It stops the warmed air in the bag being pumped out at the shoulders every time you move, and it is the single feature that makes the biggest difference on a cold night.
The bag is 215 cm long, 85 cm across at the shoulders and 55 cm at the foot — the taper that gives a mummy bag its name. Both widths matter: too narrow at the shoulder and the bag compresses its own insulation, too wide at the foot and there is dead air to heat.
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 GSM cotton and hollow-fibre fill · comfort 15 °C to 20 °C · about 1300 g · 35 × 25 cm packed
A three-season mummy bag that publishes weight, packed size and fill density, and puts its comfort range at 15 °C to 20 °C with no standard behind it.
Best for: Spring to autumn trips where about 1300 g into a 35 × 25 cm roll is the constraint that matters.
≈ £49 / 40 €
