Marmot Col MemBrain

Yes, the Col MemBrain is specifically engineered for high-altitude expeditions and extreme cold. With a temperature rating of -20 degrees Fahrenheit and 800+ fill goose down, it is built to maintain core warmth in harsh, freezing conditions.

The MemBrain fabric is both waterproof and breathable. It effectively blocks external moisture like snow or frost while allowing internal moisture vapor to escape, which helps keep the down insulation dry and lofted throughout the night.

Yes, it includes a specialized draft tube that runs along the zipper line to prevent heat loss. It also features a draft collar to seal in warmth around your neck and shoulders, which is essential for maintaining comfort in sub-zero temperatures.

The mummy shape is designed to minimize the amount of dead air space inside the bag, which makes it much easier for your body to heat up the interior. This efficient fit is critical for performance in the extreme cold environments this bag is intended for.

Yes, the bag features an integrated hidden pocket. It is designed to keep small essentials like batteries or a headlamp secure and warm, preventing them from losing charge in the cold.