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PipeDream 400 Hydrophobic down sleeping bag

-6˚C limit 3 season lightweight sleeping bag weighing 865 g with DownTek Water Repellent goose down; ideal for moving fast and light or lining your winter bag

Pipedream 400 hydrophobic light weight goose down sleeping bag
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  • Nemo - Pipedream 400 hydrophobic light weight goose down sleeping bag
  • Nemo - Pipedream 400 hydrophobic light weight goose down sleeping bag
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Please select a size. See the fitting guide for size information

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Most right-handers prefer left zip bags as it's easier to reach across your body to your left side to use the zip when lying on your back. The opposite is true if you are left-handed.

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Whether you’re running a Mountain Marathon, embarking on an ultra-light self-supported ride, or heading out for a midweek boulder and bivvy; PipeDream will leave you feeling light and unhampered without sacrificing a good night’s sleep.

Fine-tuned for maximum insulation without the bulk, PipeDream 400 combines high quality 750+ IDFB fill power goose down with a minimalist design to create a simple and ultralight bag.

A comfortably spacious cut gives a natural night’s sleep, with adjustable head closure and a sculpted neck baffle for snuggling down to fend off the draughts. Box-wall baffles minimise weight and prevent down migration; DownTek Water Repellent down and a DWR coating ensures that the early morning dew won't ruin your bag’s insulation.

With a tiny packed-size, PipeDream stows away easily and lofts effortlessly when you need it.

DownTek-treated down absorbs less water than untreated down. This means it retains its loft better in damp or humid conditions, dries quicker, and recovers better too, keeping you warmer in damp environments than untreated down. 
DownTek is environmentally safe - Bluesign approved, PFC, PFOA, and PFOS free – and uses only RDS certified down sources.   
Remember, it's better not to get your down wet – even water repellent down is no substitute for a waterproof shell!  


We use only RDS certified down; all our down is audited by a third party to ensure that it comes from birds who are not live-plucked, force-fed, or mistreated. That’s good to know.

Key features
  • 3 Year Alpine Bond
  • 3 season sleeping bag for travelling light
  • Available in sizes regular and long
  • Horizontal baffles reduce down migration
  • Box-wall baffle construction
  • Roomy cut for natural, comfortable sleep
  • Adjustable head closure and sculpted neck baffle for snugness
  • Full-length zip baffle keeps out the draughts
  • C6 DWR to keep the moisture at bay
  • 750+ IDFB fill power DownTek Water Repellent goose down
  • Excellent lofting capacity
  • RDS certified
  • Cotton storage bag and compression stuff sack
More images
  • Pipedream size comp - Pipedreams in their compression sacks. (Tip: with compression straps, you can get them even smaller!)
  • Pipedream-400-chord -
  • Pipedream-400-comp-sack -
  • Pipedream-400-cotton-storage -
  • Pipedream-400-draft-collar -
  • Pipedream-400-logo-closeup -
Vital stats
Temperature ratings


AK Sleep Limit
The majority of our customers will find this to be the tipping point between a comfortable and restless nights sleep.

Thermal test results from the lab ABOUT OUR RESULTS
TOG Leeds Comfort EN13537 Comfort EN13537 Limit EN13537 Extreme*
11 -13˚C -4.2˚C -10.8˚C -29.5˚C

* The Extreme rating is the temperature at which the average woman can remain for six hours without risk of DEATH from hypothermia - but can still sustain cold injuries - under EN13537 conditions. We do not recommend using this bag in these weather conditions, or making your purchasing decision based on this value.

This rating is for the PipeDream Regular.
PipeDream XL contains the same quantity of down as Pipedream Regular. As a result, Pipedream XL may be up to two degrees cooler than the PipeDream Regular



Fill: 90/10 Chinese goose down; RDS certified, DownTek Water Repellent
Fill power: IDFB 750
Fill weight: 400 g
Inner: 20D Polyester, 45 g/m2
Outer: 20D Polyester, 45 g/m2
Construction: Box-wall


  Reg Long
Weight 865 g 910 g
Internal length 185 cm 210 cm
Internal width 80 cm 80 cm
Zip Length 160 cm 165 cm
Stuff Bag Weight 30 g 30 g
Packed Size ⌀18 x 25 cm ⌀21 x 28 cm
Compressed size* ⌀ 19 x 14 cm ⌀ 21 x 15 cm
*Straps not included

Fitting guidance

How will you fit? Take a look at our Sleeping Bag Fitting Guide for guidance.

Origin: China

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What You Say: Customer Reviews and Comments

7 Reviews


Used this product?

Write a review
Spring trip to NZ South island

I used this bag through November 2016 in the S.Island NZ for backcountry fishing exploits - down to around 0 degrees some nights. This bag is made for such a climate and as an all round solution for world travellers avoiding Alpine conditions below around -5 min it must be one of the very best out there. Very comfortable dimensions for me 5'11" 98kg broad shouldered and superb pack size / weight. No frills so long term test will need appraisal a few years down the line. If it's anything like my old skye-high for durability it will pass with flying colours - would love one in Dark grey, Olive or Black. Alpkit colours a little bright for me generally. Also watch the price as usual guys.

Brilliant bag

Bought this for winter use with a cloud cover, and for those colder months around summer. So far haven't needed the cloud cover. Camped in subzero temperatures on the Yorkshire three Peaks and was so warm it was unzipped all night. Then on the summit of Snowdon where it was -6˚ and blowing a gale. This time zipped it up but was still warm and comfortable.

It's lightweight, roomy, packs down well in a stuff sack, is warm and really well priced. Recommended.

terrific bag

terrific light weight bag - fab for bike packing

Brilliant sleeping partner

From bikepacking to wild camping to sleeping on a friends sofa, this is a quality sleeping bag and worth every penny.

Iceland Adventures

great sleeping bag, light warm perfect, saved me on my trip. 10 days in a tent in late September in Iceland and i wasn't cold once. For cost/weight/size i think its one of the best on the market. and British! cant recommend more. I work as a rep and hear great things about Alpkit products in general from everyone i meet. also very good customer service, very helpful people so thank you very much smile

Glenkens Bobby
First rate piece of kit.

To be fair I haven't used this product yet, but can't wait as I have just taken delivery of it.
Very quick delivery and secure package.
The feel and workmanship of this sleeping bag is excellent and the provided storage bag and stuff sack are nice touches.
Thanks to the Alpkit team!

Ken Rowan
Initial thoughts on PipeDream 400 Hydrophobic Long

Just done a dry run on the bed and this bag seems to be all it promises to be; snug, good fit with plenty of riggle room despite the warning of a tight fit and feels like it will be adequately warm for 3 season UK use. The supplied stuff sac isn't up to much so put mine into a 10 lt sea to summit dry bag with plenty of room; weight 941gms. I'm fair chuffed!

What They Say: Kudos - Product Reviews from independent magazines and websites


Active Traveller Review Pipedream 400

A superb all round sleeping bag at an excellent price

Active Traveller

Active Traveller June 2017 - Active Traveller

Trail Magazine Best Value
Pipedream trail mag

PipeDream 400 Awarded Trail Mags “Best Value” Bag

Outstanding value when you compare it to other options

Trail Magazine - Spring 2018 Issue

Trail Magazine - Spring 2018 Issue March 2018 - Graham Thompson


Active Traveller: Pipedream 400

An excellent value, high specced sleeping bag with water-resistant down a bonus.


Active Traveller October 2017 - http://www.active-traveller.com/gear-reviews/326-camping/alpkit-pipedream-400