Field Test: This versatile hybrid piece is essentially a fleece jacket with a front vest cut from Polartec Alpha, an air permeable synthetic fill. The combo works like a thermostat. On the move, body heat can circulate and escape. At rest, heat gets locked in and the hood adds warmth.
Why It’s Timeless: Ideal for stop-and-go alpine climbing. $185; outdoorresearch.com —Ryan Stuart
From the Early Summer 2015 issue.