The Feathered Friends Ibis Light 0 is a wide-cut winter mummy bag rated to -17.7°C (0°F), giving broader-shouldered sleepers extra room through the shoulders and hips compared with the standard-width Snowbunting Light 0 in the same temperature class. It's filled with 900 fill power goose down under a 7D Pertex Quantum Pro shell, weighing 1250 g total with a 14 L packed volume.
A draft collar and draft tube reduce heat loss at the neck and zipper, and the 3D anatomical hood is contoured to the head. An internal pocket, stuff sack and storage sack are included, and the bag is made in the USA. As a 5-season expedition bag, it's built for genuine winter conditions and high-altitude trekking down to around -18°C — for milder 3-season use it's more warmth and weight than most hikers need.