What Our Gearhead(R) Experts Are Saying:"I wore the Aconcagua Down Vest through a stretch of freezing mornings walking the dog and the down and synthetic blend kept my core warm without ever feeling bulky under a coat. The WINDWALL fabric cut wind on the exposed corners noticeably well."Cold snaps have a way of finding the gaps in a normal jacket, and the Aconcagua Down Vest is built to close that gap right at the core. WINDWALL(TM) fabric holds off wind at the exposed shell, while a 50/50 blend of down and recycled polyester traps warmth in the main body without adding bulk under other layers. Zoned sheet insulation at the top panel, side panels, and draft flap keeps warmth steady even if conditions turn wet, and secure-zip handwarmer pockets add a place to stash cold hands between errands. It's the layer built for the stretch of the year when temperatures refuse to cooperate.