The Nano-Air Light Vest was made to be worn for the entirety of your aerobic, start-stop mountain activities, so you're never slowed down by having to change layers. Stretchy and breathable FullRange insulation dumps excess heat when you're working hard and keeps you warm when you're not. Made in a Fair Trade Certified factory.

Stretch Fabric that Resists Abrasion
Shell and lining fabric built from 100% recycled polyester ripstop offers mechanical stretch, exceptional breathability and improved abrasion resistance, with a durable water repellent (DWR) finish made without intentionally added PFAS to resist light moisture; the microtexture keeps fabric from sticking to the skin for versatile comfort

Warm, Breathable Insulation
40-gram FullRange® 100% polyester (93% recycled) insulation delivers outstanding mechanical stretch and air permeability (35 CFM), allowing excess heat to move away from the body

Built for Mobility
Articulated patterning and strategically placed, low-profile quilting, combined with stretchy fabric and insulation, provides an exceptional range of motion for unhindered movement

Comfortable Zipper
Center-front zipper has a zipper garage at the chin for next-to-skin comfort

Pocket Details
Two handwarmer pockets and a left-chest pocket are zippered, low profile and low bulk to wear comfortably with a harness or a pack; the vest self-stuffs into the chest pocket

Low-Bulk Finishes
Cleanly finished armholes and hem are low bulk and keep things simple