our Winter Fortress, From High Peaks to Frozen Tundras
Forget generic four-season bags. The Sleeping Bag isn't designed for mild autumn nights-it's engineered to be your unbreachable mobile heat fortress in sub-zero wilderness. Whether you're establishing a base camp on a snow-dusted peak or bracing against alpine winds, this bag combines a massive fill of premium goose down (up to 3000g) with an anatomical, heat-trapping mummy cut to defend your core warmth down to an extreme -35°C (-31°F)
The Core Promise: Conquer The Deep Cold
This is specialized gear for winter mountaineering, arctic expeditions, and survival in harsh conditions.
Extreme Warmth for Extreme Conditions: With a customizable fill ranging from 400g all the way to a massive 3000g of goose down, this is one of the few bags on the market built to tackle true severe cold, making it a reliable choice for ice fishing, high-altitude climbs, and polar travel.
Anatomical Efficiency: The mummy shape is precision-cut to follow your body's contours, minimizing dead air space. The insulated hood draws tight, leaving only a breathable opening, ensuring every ounce of down works at maximum efficiency to trap heat.
Robust Environmental Shield: The 380T waterproof nylon shell acts as a steadfast barrier against tent condensation, unexpected snowfall, and biting winds, keeping the critical down fill dry and lofted.
Tailored Insulation Levels: Seven fill weight options (400g, 700g, 1000g, 1300g, 1600g, 2000g, 3000g) allow you to precisely match the bag to your target climate and personal metabolism, optimizing the balance between ultimate warmth and pack weight.
Intelligent Design & Usage
Total-Enclosure System: Beyond the mummy cut, the insulated hood features a drawcord to seal around your face, maximizing protection in blizzard conditions.
Compressibility: Despite high fill power, the down allows it to compress into a manageable pack size (approx. 28x20x20cm pack size). A compression sack is typically included.
Reliable Zipper: Features a smooth-gliding, anti-snag nylon zipper that's easy to operate even with gloved hands in the dark.