Patagonia Nano-Air Light Bottom - Men's Black, M

From Backcountry

Patagonia's one-of-a-kind Nano-Air Light Bottom uses their lighter-than-air technology to keep us warm, mobile, and active as we explore the alpine. Beneath the recycled ripstop shell, revolutionary FullRange insulation provides the heat we need for the cold conditions without inhibiting stretch or blocking breathability. The slim fit is articulated for the perfect range of motion, and it layers comfortably under our shell on wet and snowy adventures. An elastic waist and stretchy cuffs make these pants easy to pull on, even over our clunky alpine boots.