The comfort insurance for freezing nights
The Black Snow -5 degree sleeping bag is designed for outdoor enthusiasts who require immediate and reliable thermal insulation. Unlike ultra-light models that require precise management of nightwear, this down sleeping bag relies on a massive amount of fill. The objective is straightforward: to trap a considerable volume of warm air to instantly stop the sensation of cold as soon as you slip inside.
Thermal barrier and protective fabric
The even distribution of the 800 cuin goose down throughout the mummy shape provides all-encompassing insulation. The 400T nylon outer shell acts as a sturdy shield against wind and condensation, protecting the integrity of the down. It is a warm sleeping bag designed for reliability and ease of use during moderate winter bivouacs.
Dimensions adapted for extreme cold: 50 cm at the feet
The footbox, widened to 50 cm, provides enough room for the feet so as not to compress the down, a critical factor for a cold-weather sleeping bag where every compressed area becomes a potential thermal bridge.
400T fabric: weave density for moderate winter
The 400T weight of the outer nylon offers a higher weave density than the lighter fabrics used for summer bags, a consistent choice for a winter sleeping bag subject to harsher conditions (humidity, repeated friction inside a tent).
If you are looking for similar insulation for your cold nights but want to avoid the maintenance of natural down in favor of a very thick synthetic cotton filling, the Naturehike MJ600 model is the ideal option.

Doubt about which bag is right for you?
The field guide helps you choose based on skill level, temperature, needs, and weight. Support answers specific questions.
Find my bag Contact supportFrequently Asked Questions
The Blacksnow has a comfort temperature of -5°C and a lower limit temperature of -10°C. These values apply under standard conditions: sleeper in thermal base layers, on an insulated sleeping mat. It is designed for trekking, bivouac use (3-4 seasons).
The Blacksnow is filled with 800 cuin. The Blacksnow weighs 1450 g, which places it in the standard category.
