Extreme Cold Duck Down Mummy Bag — 1,500 or 2,000 g of 90% Duck Down, for Deep Winter

Extreme Cold Duck Down Mummy Bag — 1,500 or 2,000 g of 90% Duck Down, for Deep Winter

2,000 g / Forest camo
$379.00 AUD
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Extreme Cold Duck Down Mummy Bag — 1,500 or 2,000 g of 90% Duck Down, for Deep Winter
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  • Extreme Cold Duck Down Mummy Bag — 1,500 or 2,000 g of 90% Duck Down, for Deep Winter
  • Extreme Cold Duck Down Mummy Bag — 1,500 or 2,000 g of 90% Duck Down, for Deep Winter
  • Extreme Cold Duck Down Mummy Bag — 1,500 or 2,000 g of 90% Duck Down, for Deep Winter
  • Extreme Cold Duck Down Mummy Bag — 1,500 or 2,000 g of 90% Duck Down, for Deep Winter
  • Extreme Cold Duck Down Mummy Bag — 1,500 or 2,000 g of 90% Duck Down, for Deep Winter
  • Extreme Cold Duck Down Mummy Bag — 1,500 or 2,000 g of 90% Duck Down, for Deep Winter
  • Extreme Cold Duck Down Mummy Bag — 1,500 or 2,000 g of 90% Duck Down, for Deep Winter
  • Extreme Cold Duck Down Mummy Bag — 1,500 or 2,000 g of 90% Duck Down, for Deep Winter
  • Extreme Cold Duck Down Mummy Bag — 1,500 or 2,000 g of 90% Duck Down, for Deep Winter
  • Extreme Cold Duck Down Mummy Bag — 1,500 or 2,000 g of 90% Duck Down, for Deep Winter
  • Extreme Cold Duck Down Mummy Bag — 1,500 or 2,000 g of 90% Duck Down, for Deep Winter
  • Extreme Cold Duck Down Mummy Bag — 1,500 or 2,000 g of 90% Duck Down, for Deep Winter
  • Extreme Cold Duck Down Mummy Bag — 1,500 or 2,000 g of 90% Duck Down, for Deep Winter
  • Extreme Cold Duck Down Mummy Bag — 1,500 or 2,000 g of 90% Duck Down, for Deep Winter
Extreme Cold Duck Down Mummy Bag — 1,500 or 2,000 g of 90% Duck Down, for Deep Winter

Down Sleeping Bag Extreme Cold Duck Down Mummy Bag

A heavy, honest winter bag: up to 2,000 g of duck down for the coldest nights you'll camp in Australia.

$379.00 AUD
Down
1,500 / 2,000 g
Type
90% duck
Warm to
−10 / −13°C
Full specification
Down fill
Colour
  • Tracked delivery Australia-wide, A$19.95 on orders from A$100 (A$9.95 under): 1–3 business days to dispatch, then 10–20 business days on the way. Order a month before your trip. Shipping
  • 30-day returns. We pay the postage if it's faulty or not as described. Returns
  • Every figure on this page is the maker's own or our clearly labelled guide. No made-up lab ratings.

A winter mummy bag with 1,500 or 2,000 g of 90% white duck down, 210 × 80 cm, in a 320T water-repellent nylon shell with a neck baffle and draught tube. The maker quotes comfort −5°C (1,500 g) and −12°C (2,000 g); our own guide is more cautious.

When the forecast says minus double figures.

Best for
Winter car camping in the high country, alpine huts and very cold sleepers.
Think twice if
It's heavy and bulky, and not built for snow expeditions. For snow camping, buy a lab-rated expedition bag from a specialist.

  • 1,500 or 2,000 g

    More down than almost any bag in the shop.

  • Neck baffle and draught tube

    Keeps warm air in when you roll over.

  • Camo or green

    Forest, digital and desert camo, or plain green.

Warm enough for your trip?

Plan on the “warm to” figure: our own cautious guide, or the maker's comfort rating where that's what we quote. If you sleep cold, or you're not sure, add 5°C. And if you're torn between two bags, take the warmer one: a bag that's too warm, you unzip; one that's too cold, you can't fix at 2 am.

Compare it with every bag we sell
  • Extreme 1,500 g Comfortable to about −10°C If you sleep cold, about −5°C
  • Extreme 2,000 g Comfortable to about −13°C If you sleep cold, about −8°C

Is it the right bag for your trip?

Pick the coldest night you expect. We'll show every bag and quilt that's warm enough, lightest first, and mark this one if it makes the cut.

How cold will your coldest night be?
  1. UL250 Warm to 15°C 250 g A$249
  2. Quilt 260 g Warm to 12°C 260 g A$329
  3. 10D goose 400 g Warm to 8°C 400 g A$369
  4. 95% envelope 400 g Warm to 10°C 400 g A$259
  5. Black Snow 400 g Warm to 8°C 400 g A$239
  6. Cozy 300 Warm to 3°C 400 g A$299
  7. Envelope 400 g Warm to 10°C 400 g A$229
  8. Long 225 cm 400 g Warm to 8°C 400 g A$319
  9. Mummy 400 g Warm to 8°C 400 g A$259
  10. Oversized 400 g Warm to 8°C 400 g A$249
  11. Letu M 450 g Warm to 7°C 450 g A$599
  12. Quilt 500 g Warm to 5°C 500 g A$449
  13. 95% envelope 600 g Warm to 5°C 600 g A$289
  14. Envelope 600 g Warm to 5°C 600 g A$259
  15. Mummy 600 g Warm to 3°C 600 g A$289
  16. Oversized 600 g Warm to 3°C 600 g A$279
  17. Winter envelope 600 g Warm to 5°C 600 g A$249
  18. Cozy 600 Warm to 1°C 630 g A$329
  19. 10D goose 700 g Warm to 2°C 700 g A$449
  20. Black Snow 700 g Warm to 2°C 700 g A$279
  21. Letu M 700 g Warm to 1°C 700 g A$729
  22. Long 225 cm 700 g Warm to 2°C 700 g A$369
  23. 95% envelope 800 g Warm to 1°C 800 g A$329
  24. Mummy 800 g Warm to −1°C 800 g A$329
  25. Oversized 800 g Warm to −1°C 800 g A$319
  26. Winter envelope 800 g Warm to 1°C 800 g A$269
  27. Letu M 950 g Warm to −4°C 950 g A$819
  28. 10D goose 1000 g Warm to −5°C 1,000 g A$549
  29. 95% envelope 1000 g Warm to −2°C 1,000 g A$359
  30. AM1000 Warm to −3°C 1,000 g A$279
  31. Black Snow 1000 g Warm to −5°C 1,000 g A$329
  32. Long 225 cm 1000 g Warm to −5°C 1,000 g A$439
  33. Mummy 1000 g Warm to −5°C 1,000 g A$369
  34. Oversized 1000 g Warm to −5°C 1,000 g A$359
  35. Winter envelope 1000 g Warm to −2°C 1,000 g A$299
  36. 95% envelope 1200 g Warm to −4°C 1,200 g A$399
  37. Letu M 1200 g Warm to −8°C 1,200 g A$899
  38. Mummy 1200 g Warm to −8°C 1,200 g A$399
  39. Oversized 1200 g Warm to −8°C 1,200 g A$399
  40. 10D goose 1300 g Warm to −9°C 1,300 g A$649
  41. Black Snow 1300 g Warm to −9°C 1,300 g A$379
  42. Long 225 cm 1300 g Warm to −9°C 1,300 g A$499
  43. Extreme 1,500 gThis bag Warm to −10°C 1,500 g A$339
  44. Double 1,800 g Warm to 3°C 1,800 g A$549
  45. Double 2,000 g Warm to 1°C 2,000 g A$579
  46. Extreme 2,000 gThis bag Warm to −13°C 2,000 g A$379

of our bags and fill weights will keep you warm enough. Lightest first, so the top one is the lightest that will do the job.

Read the full guide: trips, safety and what else to pack

  • Plan for the coldest night

    Hills, valleys and inland camps get much colder than the forecast for the nearest town. Check the overnight low for where you'll actually sleep.

  • If in doubt, go warmer

    Being too cold at night isn't just a bad night's sleep. A long, cold night in a bag that's too thin can tip into hypothermia, and there's no fixing it at 2 am.

  • The mat matters as much as the bag

    Down underneath you is crushed flat, so the ground steals your heat. Below freezing, use an insulated mat with an R-value of 4 or more.

  • Help the bag help you

    Change into dry clothes, eat something before bed, and wear a beanie. A bag holds warmth in, but it can't make it.

Which one?

Down fillPacked sizeComfortable to (our guide)Price
1,500 g39 × 36 cm−10°CA$339
2,000 g43 × 38 cm−13°CA$379

The maker doesn't publish the whole-bag weight; expect well over 2 kg.

Where it sits among every bag we sell, by grams of down

Choose by your coldest night

Highlighted: Extreme 1,500 g (1,500 g), Extreme 2,000 g (2,000 g). The other marks are our other bags and fill weights.

The numbers

Taken from the maker's own listing and spec cards for this exact model; anything marked our guide is ours. Where the maker doesn't publish something, the line is left out rather than guessed.

Down90% white duck down, 1,500 g or 2,000 g (maker's figures, not independently tested)
Comfortable to (our guide)1,500 g: about −10°C
2,000 g: about −13°C
Maker's figures1,500 g: comfort −5°C, limit −11°C
2,000 g: comfort −12°C, limit −19°C
Size210 × 80 cm, tapering to 50 cm; suits people up to about 180 cm
Shell and lining320T tear-resistant nylon, water-repellent; 320T polyester pongee lining
DetailsVertical baffles, anti-snag zip guard, neck baffle and draught tube; opposite zips can join into a double
Packed1,500 g: about 39 × 36 cm; 2,000 g: about 43 × 38 cm

“Warm to” is the figure we'd plan on: our own cautious guide, or the maker's comfort rating where that's what the table quotes. About the temperatures: Our guide, not a lab rating. It is set on the cautious side because nobody has lab-tested this down. Brands like Sea to Summit pay for an independent EN/ISO 23537 test; nobody has done that for this bag, and we won't pretend otherwise. So compare on grams of down and bag weight first: they're physical quantities. How to read them

Complete your sleep system

A bag is half of a warm night. Here's what else makes it work, and what people usually add.

  • Self-Inflating Camping Mat 10 cm — Foot Pump, Pillow End, 195 × 70 cm, Snaps Into a Double
    10 cm Self-Inflating Camp Mat

    Ten centimetres of air under you and a pillow built in: the car-camping mat that feels like a mattress.

  • Egg-Crate Foam Sleeping Mat — R 2.5 With Reflective Foil, 330 g, Folds to 56 × 14 cm
    Egg-Crate Foam Mat

    The mat that can't go flat: closed-cell foam, R 2.5, and light enough to strap on anywhere.

  • Down Sleeping Beanie — Duck Down Hat for Cold Nights in Your Bag, 100 g
    Down Sleeping Beanie

    A light down hat for the coldest part of the night, when your head is the only thing outside the bag.

  • Down Booties — 700FP Duck Down, Water-Repellent Shell, Non-Slip Sole
    Down Booties

    Warm feet, warm sleep: down booties for camp and the sleeping bag.

A mat rated for the season

The ground takes more heat than the air, and down underneath you is crushed flat. As a rough guide: an R-value of about 2 for summer, 3 to 4 for three seasons, and 5 or more on snow.

A way to keep it dry

Wet down stops insulating. Pack the bag in its compression sack inside a dry bag or pack liner, and air it out when you reach camp.

Questions

Why is your guide warmer than the maker's figure?
Because nobody has lab-tested this bag. We'd rather you bring an extra layer than rely on an optimistic number on a freezing night.
How do I store it?
Travel in the compression sack, but store it loose at home (a big cotton bag, or hanging) so the down keeps its loft.
Which size should I buy?
As a rule, pick a bag at least 15 cm longer than you are, so your feet don't press into the down and make a cold spot. The spec table above gives the length, or the height the maker says it fits. If you're between sizes, or like to sleep with a water bottle or clothes inside, go up.
Are the temperature ratings lab-tested?
No. Each temperature on this site is either the maker's own figure, labelled maker, or our own cautious guide, labelled our guide. None of these bags has an independent EN/ISO 23537 lab report, so we lead with fill weight and bag weight: physical quantities you can compare. Treat any temperature as a starting point and allow a margin, especially if you sleep cold.
Comfort, limit, extreme: which one do I use?
Comfort is the temperature a cold sleeper stays comfortable at; limit is where a warm sleeper, curled up, still sleeps. Extreme is survival only: never plan on it. Most people should plan on the comfort figure, and on a warmer mat than they think they need.
How do I store and wash a down bag?
Store it loose in its storage sack, not squashed in the compression sack. Wash it rarely, with a down-specific wash on a gentle cycle in a front loader, then tumble dry on low with two clean tennis balls until no clumps are left. It can take a few hours. A liner means you'll wash the bag far less often.
When will it arrive?
We dispatch in 1–3 business days, then it's 10–20 business days on the way to Australia. There's no warehouse or shopfront in between, which is why it takes longer and costs less. If you have a trip booked, order at least four weeks before you leave. You'll get a tracking number by email when the parcel is scanned. Full details on the Shipping page.
Will my order arrive in one parcel?
Gear from the same maker usually travels together. If your order has gear from more than one maker, it can arrive in two or three parcels, sometimes a few days apart. You'll get an email with a tracking number for every parcel, so you always know what's on the way.
Will I pay duty or GST on delivery?
No. Orders under A$1,000 clear into Australia without additional duty or GST, so there's nothing to pay when your parcel arrives.
What if it isn't right?
You have 30 days from delivery to return it unused and in its packaging. If it's faulty or doesn't match what we published, we pay the return postage and refund in full. See Returns.

More from this shelf

  • Tracked delivery Australia-wideA$9.95 on orders under A$100, A$19.95 from A$100. No duty or GST to pay on delivery.
  • Every number publishedGrams of down and weight on every bag, the R-value wherever the maker publishes one, capacity and weight on every pot, and a note wherever the maker's figures are unclear.
  • 30-day returnsUnused and in its packaging. We pay the postage if anything is faulty or not as described.
  • Replies within 24 hoursEmail us Monday to Friday and a person answers, not a bot or a call centre.