The Nano-Air Jacket delivers a breakthrough in active insulation. This jacket features FullRange insulation that is warm, stretchy and so breathable that you can put it on and leave it on for the entirety of any highly aerobic start-stop mission in the mountains. Lightweight-yet-durable, weather-shedding shell with a DWR finish and full mechanical stretch allows for a close, athletic fit over baselayers while not limiting your range of motion. Trim-fit scuba hood fits next to skin, or over a small helmet.
This garment has a slim fit.