800 Fill Down Jacket For Backpacking: 7 Proven Picks (2026)
An 800 fill down jacket for backpacking is an insulating layer filled with goose or duck down that lofts to about 800 cubic inches per ounce. That loft traps more warm air per gram, so you carry less pack weight for the same warmth, and the jacket squashes down to roughly the size of a … Read more