800 Fill Down Jacket: 7 Best Warm Picks To Buy In 2026
An 800 fill down jacket is a jacket insulated with goose or duck down that expands to roughly 800 cubic inches per ounce in lab testing, a rating the industry calls fill power. Higher loft traps more warm air per ounce, so the jacket feels lighter, packs smaller, and holds heat better than a lower-fill … Read more