Details 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. Material Shell and lining: 1.6-oz 30-denier 100% recycled polyester air-permeable shadow stretch ripstop with a PFC-free DWR finish (durable water repellent coating that does not contain perfluorinated chemicals). Insulation: 40-g FullRange® 100% polyester (93% recycled). Made in a Fair Trade Certified™ factory Fit Slim fit Details 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 40 grams of warm FullRange® 100% polyester (93% recycled) insulation delivers outstanding mechanical stretch and air permeability (35 CFM), allowing excess heat to move away from the body Articulated patterning and strategically placed, low-profile quilting combined with stretchy fabric and insulation provide an exceptional range of motion for unhindered movement Center-front zipper has a zipper garage at the chin for next-to-skin comfort Two handwarmer pockets and two chest pockets are zippered, low profile and low bulk to wear comfortably with a harness or a pack; self-stuffs into the left-chest pocket Cleanly finished armholes and hem are low bulk and keep things simple Made in a Fair Trade Certified™ factory, which means the people who made this product earned a premium for their labor Weight 211 g (7.46 oz) Patagonia Nano-Air Light Vest Men's