The Mens Nano-Air Hoody from Patagonia is a warm, stretchy, breathable layer you can put on and leave on through high-output, stop-and-go activities in cold weather. Even better, it's upped the recycled material content throughout the Nano-Air, from the lightweight, weather-shedding shell, to the comfortable plain-weave liner, to Patagonia's warm-when-wet FullRange insulation — all with zero sacrifice in performance. It's a new standard for technical insulation, merging the comfort and breathability of open fleece with the protection and warmth of a puffy while using recycled inputs to the greatest possible degree.The trim, stretchy hood is designed for next-to-noggin use, though it'll still fit snugly over low-profile helmets. Two handwarmer pockets and a chest pocket all close with trim, low-bulk zippers. The center-front zipper has a zipper garage for comfort on your chin. The variable conditions cuffs have sleek, stretch-knit insets that allow you to push on a lightweight shell and feel the thermal properties of the Nano-Air skyrocket.