As low as €1,149.00

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5-8 working days

The new sleeping bags from the Excuistic series have been created with polar and winter alpine expeditions in mind. In designing them we used not only our vast experience in the production of down sleeping bags, but we also carefully listened to the needs of users. We constantly strive to improve our products, therefore we did not accept any compromises while working on the Excuistic series, both in case of the selection of materials and the applied technological solutions. They are filled with 900 Fill Power best Polish goose down and made with reliable, waterproof outer fabric Pertex® Quantum Pro 36 g/m².

The Excuistic sleeping bag has one mission: to provide the best possible protection for the user in extremely difficult winter conditions. In order to achieve this mission, we decided to use unique design solutions. Excuistic has as many as 71 down chambers, and their arrangement in two layers minimises the risk of creating 'cold spots'. The side panels, running along the length of the sleeping bag, further reduce the possibility of any migration of down and help to stabilise it on the sides where the risk of disturbing efficient insulation is the highest. The advanced design of the hood and of the foot box gives extra protection to the most vulnerable parts of the body. The hood is adjusted by elastic cords, and the long pullers on the sliders are easy to grab with thick gloves. The sleeping bag has two internal mesh pockets, thanks to which it is easier to manage the pockets' contents. The sleeping bag's wider cut makes it possible to sleep in large expedition clothing and also to keep several items in it that most need protection from the cold. We have applied all these solutions while bearing in mind the need to keep the weight of the sleeping bag as low as possible, so that it still weighs only 2280 g, of which 1500 g is down.

Such a unique product deserves top quality service! The premium CUMULUS® inspection bundle service, prepared specifically for these Excuistic models, includes two free inspections and servicing, as well as professional washing of the sleeping bag. Excuistic is a must for travellers planning polar or winter alpine expeditions.

More Information
Down quality900 FP
Total weight2270 g
Down weight1500 g
Weight of unfilled sleeping bag770 g
Comfort temperature-32 ℃
Limit temperature-46 ℃
Extreme temperature-70 ℃
Maximum user height192 cm
Length210 cm
Width (top/bottom)87/60 cm
Stuffsack’s dimensions (height/diameter)40/30 cm
Stuffsack’s volume28,3 l
Number of down chambers71
Product features
  • Premium CUMULUS® inspection bundle service: two free inspections and servicing, as well as professional washing of the sleeping bag
  • Fill: 900 Fill Power ethically sourced Polish goose down
  • Shell: Pertex® Quantum Pro 36 g/m², 20-denier ripstop, DWR finish (100% nylon)
  • Liner: Pertex® Quantum 29 g/m², 15-denier ripstop, DWR finish (100% nylon)
  • 120 cm, 5 mm YKK® zip with 2 self-locking sliders
  • Zip slider with anti-snag system
  • Independently filled top and bottom of the sleeping bag
  • 2 down-filled zip insulating tubes
  • Additional anti-snag tapes on zip insulating tubes
  • Mummy shape
  • Anatomically shaped hood with an advanced, 3D construction
  • Advanced foot area construction for better protection
  • Construction: Double H-shaped chamber design
  • Differencial cut design
  • Separately filled front and bottom
  • 2 inner pockets for small items
  • Can be opened and ventilated
  • Can be combined with other Excuistic sleeping bags
  • Hang loops for storage and drying
  • Stuffsack and storage sack included

Expert quality



Years of breeding experience, a specific climate and research facilities are the secrets behind the excellent parameters of Polish down, which is considered to be the best in the world. Despite technological advancement and attempts to make artificial insulation that would be just as reliable, down still remains unrivaled.

Ethical sourcing


We only use down from certified Polish producers. Thanks to their geographical proximity, we can monitor the production. We are absolutely sure down used by Cumulus has been ethically sourced. It is from free-range geese that have access to water. The excellent breeding conditions are also reflected in the down’s high quality.



Pertex® and Toray®, two fabrics we commonly use in our products, are made in Japan. Renowned in the outdoor world, they are both high-performers and have an impressive resilience considering their lightweight structure. At 19g/m2 Toray Airtastic® is the lightest downproof fabric in the world.



YKK® is the most trustworthy zip producer in the world, whose zips highly outperform the competition. Almost all our products feature YKK® zip - from clothing, accessories, to sleeping bags.