The PipeDream 400 is an ultra-lightweight, compressible bag with an excellent warmth to weight ratio.

With 400 grams of 750 fill power down to provide lots of lofty warmth without compromising on weight. 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.

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
  • 3 Year Alpine Bond

Vital stats

Temperature Ratings

AK Sleep Limit: -6°C/21.2°F
Our recommended usable limit of the bag. The majority of our customers will find this to be the tipping point between a comfortable and restless nights sleep.

TOG EN13537 Comfort EN13537 Limit EN13537 Extreme*
11 -4.2°C/24.44°F -10.8°C/12.56°F -29.5°C/-21.1°F

* 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 Grey goose down - RDS certified & DownTek PFC-Free Hydrophobic
Fill power: IDFB 750
Fill weight: 400g
Inner: 20D Polyester, 45g/m2
Outer: 20D Polyester, 45g/m2
Construction: Box-wall


Weight: Reg - 865g / Long - 910g
Internal length: Reg - 190cm / Long - 210cm
Internal width: Reg - 75cm / Long - 75cm
Zip Length: Reg - 160cm / Long - 160cm
Stuff Bag Weight: Reg - 30g / Long - 30g
Packed Size: Reg - ⌀18 x 25cm / Long - ⌀21 x 28cm
Compressed size:* Reg - ⌀ 19 x 14cm / Long - ⌀ 21 x 15cm
*Straps not included

Origin: China

Care & Environmental Advice

Environmental considerations


As part of our continuing effort to remove long-chain flurocarbons from our products, we’re now introducing C0 Durable Water Repellent (DWR) treatments to our sleeping bags. Despite the slight impact on performance when compared to C6 DWRs, C0 DWRs are non-toxic and completely PFC-free, causing significantly less environmental damage. We fully support this change. In fact, we quite like the idea of taking time to look after our kit so that it lasts a long time. We’re committed to reducing the environmental impact of all our products, reviewing the materials we use, manufacturing methods and our own consumption of resources. We do the research, make informed decisions, and choose the best option available to us. 


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.

Active Traveller review the Pipedream 400

"The PipeDream 400 is a solid three season sleeping bag at a truly excellent price. Have a quick Google and you're unlikely to find many other sleeping bags offering this combination of weight and performance at this price, making it one of the best value sleeping bags for bikepacking and wild camping out there"

Read the full review here

Trail Magazine Review Pipedream 400

"A popular bag for good reason, with a great balance of performance, packability and value"

Read the full review in Trail Magazine, Issue Spring 2020

Shop PipeDream 400


The Details

Pipedream 400 in action