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Cumulus Excuistic 1400


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The Cumulus Excuistic 1400 is a light, high quality goose down sleeping bag, specifically developed for use in some of the world's harshest environments.

The low weight is achieved by using Pertex Quantum fabric on the inside and the outer shell of Pertex Quantum Pro (f.k.a. Pertex Endurance) which improves resistance to moisture coming from the condensation of water vapour or melting snow in the tent. All Excuistic sleeping bags have a brick chamber structure with special protection in the foot area. Double insulation of the zip, an anatomically-fitted hood and an inner collar are, of course, standard equipment. Cumulus have increased the length and added some space to the feet compared to previous models to allow for storage inside - as protection against freezing.


Designed and built in Poland, Cumulus draw on 30 years of experience and know-how in down and textile manufacture to provide some of THE best sleeping bags on the market. At the vanguard of sleeping bag construction techniques and design innovation, Cumulus offer as many as five methods of chamber construction, each developed to offer its own unique benefits [Cumulus Down Sleeping Bag Construction article]. All bags use sustainably sourced Polish goose or duck down, high-grade face and liner fabrics from Pertex, YKK zippers and, unlike most other sleeping bag brands, are entirely constructed in the EU.

Cumulus clothing and sleeping bags hold the EDFA (European Down and Feather Association) certificate for ethical down sourcing


Temperature ratings are used to indicate a bags performance and help you decide between models. However, they are subjective and can be greatly affected by factors such as what you're happy to wear (clothing wise) in conjunction with the bag, your health and metabolism, how much you have had to eat or drink, humidity and altitude, the type of shelter used and whether you are using a suitable insulating mat.

As a guide, the "Comfort" rating indicates the range at which a woman gets a comfortable night’s sleep, the "Limit of Comfort" rating indicates the range at which a man gets a comfortable night’s sleep and the "Extreme" rating indicates a range at which a woman is protected from hypothermia. The Extreme rating is basically a survival rating and it is not advisable to rely on this for general use.

More Help? For further assistance on choosing your down sleeping bag, please view this article explaining fill power, the pros and cons of down over synthetic insulation and more info on caring for your bag available to view here: A Guide to Down Sleeping Bags.


  • Outer fabric: Pertex Quantum Pro, 36 g/m²
  • Inner fabric: Pertex Quantum, 35 g/m²
  • Filling: Polish goose down, 850 cuin
  • Construction: double “H” chambers
  • Independently filled top and bottom of the sleeping bag
  • 175 cm YKK separating zip with two self-locking sliders
  • Can be opened and ventilated at the bottom of the sleeping bag
  • Can be combined with other sleeping bags
  • 2 full length, down-filled, zip insulating baffles
  • Additional anti-snag tape
  • Independent down-filled collar with an advanced, 3D construction
  • Anatomically shaped hood with a an advanced, 3D construction
  • Internal pocket
  • Additional, large mesh bag to store your sleeping bag at home


  • Total weight: 1990 g
  • Down weight: 1400 g
  • Weight of unfilled sleeping bag: 590 g
  • Comfort temperature: -25 ˚C
  • Limit temperature: -37 ˚C
  • Extreme temperature: -46 ˚C
  • Maximum user height: 192 cm
  • Length: 210 cm
  • Width (top/bottom): 87/60 cm
  • Stuffsack dimensions (height/diameter): 46/24 cm
  • Stuffsack volume: 20,8 l
  • Number of down chambers: 53

10 Year Warranty
Made in the E.U.