Let Patagonia be the first to welcome you to the new age of athletically oriented insulation with the Women's Nano Air Hooded Insulated Jacket. This game changing piece of outerwear blends the stretch and flexibility of fleece with the breathability and warmth of synthetic insulation. If you're leading the skin track in the backcountry and your crew isn't quite as speedy as you are, you'll be glad the Nano Air hoodie breathes yet holds heat while you wait for the stragglers to reach you. Ripstop nylon on the outside gives this stretchy jacket a bit of a stiff upper lip in the face of rough rocks and nasty branches. Nylon plain weave on the inside slips over your silkweight baselayer without giving you grief. Proprietary FullRange insulation isn't stuck in place like you, it breathes deeply and stretches. Whether you're climbing during the last days of fall or stabbing your ski pole for an extra hit of stability along a narrow traverse, the Nano Air moves with you. The slim fit means this jacket won't interfere with your on rock or off piste plans. The hood stays close to your head for a trim profile. If it gets a wisp too windy, zip the full height collar closed to protect your neck and chin from bitter breezes. Two smaller chest pockets are harness compatible for easy access to snacks, lip balm, or your credit card sized camera. Two larger hand pockets hold gloves and full sized energy bars.