SLEEPING BAG 900 Ultralight

ULTRALIGHT 900: Uncompromising Protection in Winter Conditions

The ULTRALIGHT 900 is the culmination of our “light and fast” philosophy, designed for demanding winter use and sleeping in sub-zero temperatures. It’s an ultralight sleeping bag that effectively insulates against the harshest conditions. Filled with 900 grams of the highest quality Polish 900 cuin goose down, it’s an impenetrable barrier against the cold, guaranteeing thermal comfort in winter.

The shell is made from the ultralight yet durable Airtastic® 7D fabric (19 g/m²) by the Japanese company Toray®. The construction features our patented, three-dimensional V-baffles (DSV), which maximize the down’s ability to trap heat and eliminate “cold spots.”

In winter, every detail matters. That’s why we’ve equipped the ULTRALIGHT 900 with a fully adjustable, anatomical 3D hood and an extensive thermal collar, which together create a tight seal to prevent heat loss. Double, insulated down baffles along the entire length of the YKK® zipper provide extra protection against the cold. The ergonomic cut and enlarged “footbox” ensure comfort, even when you’re sleeping in an extra layer of clothing.

Key Features:

• Intended Use: Professional ultralight winter / expedition sleeping bag.
• Extreme Thermal Performance: Guarantees comfort in winter conditions: T-LIM -19°C / T-COMF -11°C.
• Airtastic® 7D Fabric by Toray®: Ultralight (19 g/m²) and durable Japanese-made material, woven from 7D fibers in a Rip-Stop weave.
• Selected Polish 900 Cuin Goose Down: 900g of fill with an ideal down-to-feather ratio (98/2) for maximum insulation.
• Innovative DSH Baffle Construction: Patented construction of three-dimensional V-baffles with a “hidden seam” (Polish Patent No. 143773), ensuring even down distribution and eliminating cold spots.
• Advanced Ergonomics: Anatomical mummy cut with profiling at the hips and knees, as well as an enlarged “footbox” for winter socks or booties.
• Functional Details:
  • Two-way YKK® main zipper (130 cm) protected by two insulated baffles.
  • Fully adjustable 3D hood and extensive thermal collar.
  • Internal pocket for electronics.
  • Included: ultralight compression sack (sewn with a French seam) and a cotton storage sack.

Technical data:

Temperature range of use:
T comf ♀ : -10°C
T limit ♂: -17,5° C;
T ext : -38° C

Tested in accordance with EN 13537:2012

Internal dimensions:
Length: 199 cm (M); 208 cm (L); 220 cm (XL).
Width at shoulders: 69 cm (M); 78 cm (L); 85 cm(XL)

All Malachowski brand sleeping bags are manufactured and filled with down in Poland, in the Beskid Mountains, in Dębowiec.