Pipedream 400 Hydrophobic / Regular / Right-Hand

Down sleeping bag


Ultralight 3-season 750 FP hydrophobic goose down sleeping bag with box wall construction, a -6ºC sleep limit and weighing just 865: ideal for fast and light adventures

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Pipedream 400 Hydrophobic / Regular / Right-Hand Down sleeping bag


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You can have as many sleeping bags as you want – down and synthetic, summer and winter weights – but there’ll always be one bag you immediately reach for to cover all eventualities.

The PipeDream 400 is a lightweight, compressible bag with an excellent warmth to weight ratio. We’ve used 400 grams of 750 fill power down to provide lots of lofty warmth without compromising on weight. With no unnecessary features, weighing a mere 865 g and packing down as small as 19x14 cm (smaller than your average melon - the fruit, not your head), it’s the ideal bag for multiday backpacking, bikepacking and cycle touring.

There are lots of variables (including how much you’ve had to eat before bed - eating a full wheel of camembert usually does the trick!), but, for us, the PipeDream 400 is the ideal level of down fill for 3-season use in the UK, summer alpine climbing, or even as a liner bag for winter use.

Horizontal box-wall baffles eradicate cold spots and prevent down migration and a tapered mummy shape ensures the bag is as thermally efficient as possible by reducing the amount of internal air. The drawcord hood closure, neck baffle and full-length zip baffle keep out draughts, trapping precious warm air when the temperature drops.

The PipeDream 400 has a water-resistant PFC-free DWR coating, so the odd drip of condensation or early morning dew won't ruin your bag’s insulation. DownTek™ Hydrophobic down also loses less of its warmth when wet, dries quicker and recovers better from moisture.


Key Features

  • 750 FP RDS-approved down provides a great warmth to weight ratio and is super compressible
  • C0 DWR treated outer and DownTek™ PFC-Free hydrophobic down resist damp and moisture ingress
  • Narrow, tapered mummy shape reduces internal air space and increases thermal efficiency
  • Horizontal box-wall baffles reduce down migration and prevent insulation cold spots
  • Adjustable head closure, sculpted neck baffle and full-length zip baffle keep out draughts
  • Cotton lofting bag for storage and compression stuff sack included
  • -- Year Alpine Bond

Vital stats

Temperature ratings

_x0009_ _x0009__x0009_-6˚C _x0009__x0009_AK Sleep Limit _x0009__x0009__x0009_The majority of our customers will find this to be the tipping point between a comfortable and restless nights sleep. _x0009__x0009_ _x0009__x0009_  _x0009_ _x0009_ _x0009__x0009_ _x0009__x0009__x0009_ _x0009__x0009__x0009__x0009_Thermal test results from the lab ABOUT OUR RESULTS _x0009__x0009__x0009_ _x0009__x0009__x0009_ _x0009__x0009__x0009__x0009_TOG _x0009__x0009__x0009__x0009_Leeds Comfort _x0009__x0009__x0009__x0009_EN13537 Comfort _x0009__x0009__x0009__x0009_EN13537 Limit _x0009__x0009__x0009__x0009_EN13537 Extreme* _x0009__x0009__x0009_ _x0009__x0009__x0009_ _x0009__x0009__x0009__x0009_11 _x0009__x0009__x0009__x0009_-13˚C _x0009__x0009__x0009__x0009_-4.2˚C _x0009__x0009__x0009__x0009_-10.8˚C _x0009__x0009__x0009__x0009_-29.5˚C _x0009__x0009__x0009_ _x0009__x0009_ _x0009_ _x0009_* The Extreme rating is the temperature at whic



Care & Environmental Advice

Environmental considerations

DOWNTEK PFC-FREE WATER REPELLENT DOWN 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! RESPONSIBLE DOWN STANDARD 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.


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The Details

Pipedream 400 Hydrophobic / Regular / Right-Hand in action