Onebagging in sub-zero temperatures sounds impossible. A detailed trip report from Iceland in February proves otherwise—but only with the right gear and layering strategy.
A traveler recently shared their complete packing breakdown for a 5-day Iceland winter trip, where temperatures dropped to "feels like" 8°F (-13°C) with heavy snow and wind. The trip included hiking in a national park, waiting hours in brutal cold for the aurora, and even swimming outdoors during hail.
What actually worked
According to the detailed r/onebag post, the key to winter onebagging is not bringing bulky items—it's bringing the right layers.
Waterproof trail runners instead of boots. Many travelers assume winter trips require heavy hiking boots. This traveler brought waterproof trail runners and found they handled everything from snowy harbors to national park trails. The flexibility and lower weight made a significant difference when navigating icy surfaces.
Three-layer system. Merino wool base layer, fleece or wool mid-layer, and a combination of puffer jacket with shell worked across all conditions. The system allowed adjustment based on activity level—critical when alternating between hiking and standing still watching for northern lights.
Strategic versatility. A Wool & Prince Piqué shirt got worn hiking, to restaurants, and on flights. Icebreaker merino shorts served for swimming, sleeping, and lounging—staying odor-free throughout. This kind of multi-use packing is what makes onebagging possible even in extreme climates.
What didn't work
Even experienced travelers make mistakes. This trip highlighted several oversights:
Sunglasses. Forgotten at home—a painful error. Snow creates intense glare, and without sunglasses, outdoor activities became uncomfortable and potentially dangerous for eye health.
