Patagonia Hyper Puff Jacket

Patagonia.com says:
In wind, cold and snow, at belays and in base camps, our Hyper Puff(TM) Jacket delivers reliable weather-resistant warmth. Its innovative HyperDAS insulation (100-g 100% polyester throughout) keeps your heat, packs down small and then springs back to far greater loft than other synthetic insulations of its weight. A lightweight ripstop nylon Pertex Quantum(R) shell surrounds the insulation and is durable, water-resistant, windproof and treated with a DWR (durable water repellent) finish. Along with articulated patterning, the jacket stretches to accommodate your moves and to help trap your heat. Elasticized cuffs and a discreet drawcord at the drop hem further seal in warmth. Pockets: two zippered, insulated handwarmers; one large interior mesh drop-in; one exterior zippered chest. Comes with stuffsack for easy storage.