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PipeDream 400 Hydrophobicdown sleeping bag

Ultra lightweight 3 season hydrophobic goosedown sleeping bag. Box wall construction with a -6ºC sleep limit and weighing just 865 g

Pipedream 400 hydrophobic light weight goose down sleeping bag
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PipeDream 400 Hydrophobic 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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New for 2017 is Nikwax Hydrophobic down, certified by the RDS to ensure the PD400 continues to set the standard high.

The PipeDream 400 has a box-wall construction to give a lightweight fine tuned sleeping bag with the adventurous traveller in mind. Optimised with 750 fill power down to get the most warmth, yet weighing only 865 g. With no unnecessary features this specialist bag uses 400 g of 90/10 goosedown and is suited to 3 season use or as a liner bag for winter trips.

The bag has a DWR coating so the odd drip of condensation or early morning dew won't ruin your bag’s insulation and the dark colour scheme absorbs heat from the sun - so if your down is unlucky enough to get wet, it will dry quicker.

Supplied with cotton storage bag and lightweight stuff bag.

Stays dry and retains loft up to 60 times longer than untreated down. It’s water based formulation is PFC-free and will not harm you or the environment. Absorbs 90% less water than untreated down, restoring performance much quicker.

The down we use is certified RDS (Responsible Down Standard). This mark indicates that the down in this product does not come from birds that have been live-plucked or force-fed, and that their welfare has been protected from the time they were hatchlings to when they are slaughtered. That’s good to know.

Key features
  • 3 Year Alpine Bond
  • Adjustable head closure and draft collar
  • Excellent lofting capacity
  • Box-wall baffles
  • Zip baffles
  • Nikwax Hydrophobic Down
  • RDS certified: All of our down is ethically sourced, not live-plucked, and not force fed
  • C6 DWR coating to shed morning drips
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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.


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


Weight: 865 g
​Internal length: 185 cm
​Internal width: 64 cm
Zip length: 160 cm
Stuff bag weight: 30 g
Packed size: ⌀ 18 x 25 cm
Compressed size: ⌀ 19 x 14 cm (straps not included)

Fitting guidance

How will you fit? Our guide is based on the user wearing thin base layers.

Spacious: 5ft3 tall or you have a shoulder circumference of around 100 cm. The bag will be perfectly useable but you will have space within the bag. For this reason it will not be as thermally efficient as an optimum fit but it will be comfortable and you will easily be able to wear extra layers.

Optimum: 5ft11 tall or you have a shoulder circumference of around 124 cm. At this size you are the ideal candidate for this bag. You should be able to easily arrange yourself in the bag, and still have the space to wear an additional down jacket if necessary.

Tight: 6ft1 tall or you have a shoulder circumference of around 128 cm. At this size you will start to compress the down and reduce the thermal efficiency of the bag, especially in the foot section and have limited movement around your shoulders when the zip is full closed. You should still be able to take your socks off, but might struggle to take off a top layer without undoing the zip.

Origin: China

Free UK Shipping on all orders

Free 2 day delivery to UK addresses is included in all orders so the price you see is the price you pay. Upgrade to next day at the checkout.

Free No hassle 123 Day Returns

Buy with confidence and if you are not happy, change your mind or want a swap for any reason then return it for free and we will exchange or refund no question. The price you see is the price you pay. Just return the kit as you receive it - in its original condition, unused, unworn, with original packaging and fit for resale.


We offer a range of finance options from 0% to 9.9% starting on orders over £500. Please give us a call on 01773 417007 to apply for finance. Our customer support heros will take your order and talk you through the quick and easy application process.

Alpine Bond

If one of our products does not meet your expectations upon delivery or, if it does not live up to the demands placed upon it, please return it within 3 years of purchase for repair, replacement or refund. If the problem is our fault then we will do this to your satisfaction if it’s your fault then we will help out the best we can.
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5 Reviews


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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



Active Traveller Review Pipedream 400

A superb all round sleeping bag at an excellent price

Active Traveller

Active Traveller June 2017 - Active Traveller


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