Down offers efficient warmth for its weight but loses loft when wet, while synthetic insulation retains more useful warmth in wet cold and generally dries faster. Fill power describes the loft of down rather than the total warmth of a jacket, and a hood adds meaningful head and neck coverage when the jacket is part of a cold-weather system.
29 insulated jackets compared by published weight and price →median 13.6 oz · lightest Western Mountaineering Flash Vest at 5.0 oz · price per ounceSome links here are affiliate links: if you buy through one, we may earn a commission at no extra cost to you. Rankings follow published figures, never commission. As an Amazon Associate I earn from qualifying purchases. How this works
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