The Patagonia DAS is our highest rated synthetic insulated winter-weight parka. Frequent revisions have created a stunningly effective jacket for expeditions that cross multiple climates and for overnight alpine climbs and backcountry trips where a wet down parka would force you to bail, or worse. Despite a suite of expedition features, the premium insulation and light fabrics keep the DAS lightweight at only 22 oz. in men’s medium. This parka performs so well and is offered at such a reasonable price that we feel it’s the only warm synthetic insulated parka worth buying.
Source: BackPacking Light