Arc'teryx Thorium Hoody vs Fjällräven Expedition Pack Down Hoodie

The Thorium Hoody is the warmer, more technical jacket. Its 750-fill down, larger baffles and insulated StormHood make it the better pick for cold belays, winter hikes and standing around in the cold. The Expedition Pack Down Hoodie is lighter in warmth and built as a packable midlayer or reinforcement layer under a shell, with synthetic padding over the shoulders where a pack rubs. Reviewers rate both well for build quality; the Arc'teryx is the step up if you want one jacket for serious cold, the Fjällräven if you want a flexible layer that packs small.

• Choose the Arc'teryx Thorium Hoody if you want maximum warmth from a light down jacket for cold climbing, winter hiking or everyday cold weather, and you value the helmet-compatible insulated hood and harness-friendly two-way zip.
• Choose the Fjällräven Expedition Pack Down Hoodie if you want a packable down layer to wear under or over a shell, with synthetic insulation over the shoulders for pack straps and damp conditions.