Feathered Friends Eider Light Sleeping Bag

The Eider Light features a more generous cut than standard mummy bags, specifically designed to accommodate extra layers of clothing or even bulky gear you might need to keep warm inside your bag during extreme winter conditions. It offers the thermal efficiency of a mummy shape without the restrictive feeling that can make sleeping uncomfortable.

The FlyTi lining uses a thin titanium film to reflect your body's radiant heat back toward you, rather than letting it escape through the fabric. This adds a significant boost to the bag's overall thermal efficiency without adding the bulk or weight of extra insulation.

Continuous baffles mean the down insulation isn't sewn into fixed chambers, allowing you to shift the down from the bottom of the bag to the top—or vice versa—depending on the temperature. This gives you more control over your warmth distribution throughout the night.

Yes, the shell is constructed from Pertex Quantum Pro, which is highly weather-resistant and designed to handle the moisture and snow typically encountered during winter mountaineering. While it is not fully waterproof, it is built to protect the high-loft down from condensation and light precipitation.

Absolutely. The draft collar and draft tube act as a seal around your neck and the zipper, preventing warm air from escaping and cold air from creeping in when you move. It is an essential feature for maintaining the -10°F temperature rating in real-world conditions.

While you could technically use it, this bag is specifically engineered for winter use with a -10°F rating. It will likely be far too warm for spring, summer, or early autumn trips, even in high-altitude environments.