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Expedition 1400 Sleeping Bag: -40F Down

5 out of 5 stars
1 Review
Current price: $900.00 Original price: $1,200.00
25% off
Color:Formula One



Highly engineered down bag for serious expeditions.

Let's get right to the point: the Rab Expedition 1400 -40 Degree Down Sleeping Bag is designed to keep you alive in the harshest environments on earth. Period. The water-resistant Pertex Endurance and Microlight fabrics are sandwiched around hydrophobic 850-fill European goose down, which has an absurdly high warmth-to-weight ratio, letting the Expedition check in at just over 4.5lbs. It could be even lighter, but Rab designed it to be slightly roomier than usual, the better to accommodate the down clothing systems that can be essential during a high-alpine bivvy or penguin-freezingly cold arctic night.

The warmest bag in the world is no good if all your body heat seeps out, so Rab was careful to design the Expedition with close-fitting neck and face baffles, along with a collar and drawcord hood, to lock the warmth in and the elements out. At the torso, the longitudinal baffles use Flowgate technology to keep the down from migrating and leaving you with cold spots, while the footbox features longitudinal baffles as well. There are thoughtful features, too, like an internal zippered stash pocket and anti-snag zipper tape to make your bag that much easier to use, and Rab included a drybag compression sack for easy and weatherproof packing.


  • 850-fill hydrophobic European goose down
  • Pertex Endurance water-resistant outer fabric
  • Pertex Microlight inner fabric
  • Close-fitting neck and face baffles with collar and drawcord hood
  • Logitudinal chest baffles with Flowgate technology
  • Angled foot box with longitudinal baffles
  • Compatible with down clothing
  • Anti-snag zipper tape
  • Internal stash pocket
  • Drybag compression sack and storage sack included
  • Item #RAB000T
[shell] 30D Pertex Endurance, [lining] 30D Pertex Microlight
850-fill down
Max User Height
6ft 5in
Shoulder Circumference
Hip Circumference
Foot Circumference
Bag Length
Fill Weight
3lb 1.4oz
-40 F
Storage Sack
yes, cotton
Stuff Sack
yes, compression, dry bag
Claimed Weight
4lb 10oz
Manufacturer Warranty

Overall Rating

5 based on 1 ratings

Review Summary

1 Stars - 0 reviews
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5 Stars - 1 reviews

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5 out of 5 stars

September 17, 2022

Proper hot

This works, Its so hot in here. I broke the zip a week ago and haven't managed to get out of it since. The sleeping bag is warmer than ambient temperatures by at least 30 degrees. I have lost my body weight in sweat in the last week and have to regularly drink water every 5-6 minutes otherwise it feels like I'm in the Sahara desert with this thing on. The CIA would make good use of this as a torture device, Guantanamo bay wouldn't go amiss. Going to the toilet is impossible in this, especially if you can't leave. 10/10 would recommend.


Originally reviewed on Rab