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. Features: Stretchy, Breathable and PFC-Free Fabric The 100% recycled polyester ripstop shell and lining fabric offer mechanical stretch, exceptional breathability and improved abrasion resistance, with a PFC-free DWR finish (durable water repellent coating that does not contain perfluorinated chemicals) to resist light moisture; the microtexture keeps fabric from sticking to the skin for versatile comfort FullRange™ 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 Zipper with Garage Center-front zipper has a zipper garage at the chin for next-to-skin comfort Pocket Details Two handwarmer pockets and a single chest pocket are zippered, low profile and low bulk to wear comfortably with a harness or a pack; self-stuffs into the chest pocket Low-Bulk Design Cleanly finished armholes and hem are low bulk and keep things simple Supporting The People Who Made This Product Made in a Fair Trade Certified™ factory, which means the people who made this product earned a premium for their labour Weight 211 g (7.5 oz) Men's Nano-Air Light Vest