The Millet Evole Light 700 Vest places 700-fill hydrophobic duck down where warmth-to-weight matters most, then swaps in recycled synthetic insulation in the high-abrasion, moisture-prone areas where sweat and wear would otherwise flatten the down over time. The ripstop shell carries a PFC-free DWR treatment and a full-height front zip to cut wind on exposed ridgelines, while stretch bias trim and seamless shoulders let it disappear under a shell without binding on the arms. It packs into its own pouch when the pace picks up and the extra layer comes off. What Our Gearhead(R) Experts Are Saying:"The dual-zone layout is the reason I reach for this over a straight down vest. The synthetic panels in the high-wear zones keep the fill lofting even when I'm sweating through a steep approach."