"The Patagonia Down Sweater Vest earns its place when arms need to move freely and core warmth still matters: skinning up a skin track, belaying on a cold ledge, or hiking into a headwind. The shell and lining are cut from NetPlus 20-denier recycled nylon ripstop made from reclaimed fishing nets, and the DWR finish is formulated without intentionally added PFAS. What Our Gearhead® Experts Are Saying:""I wear this under a shell on moving days when a full jacket would overheat me on the climb. The sleeveless cut keeps my arms free and the 800-fill down holds core warmth without adding bulk."""