After more than eight years in development, the Spoonbill double-bag is finally available for sale at your local gear shop. It's already made a splash by picking up a 2012 Backpacker Editor's Choice Award, and weighing in lighter than plenty of single bags we've seen, it's no wonder. The 2.5-pound sack uses 900-fill goose down insulation (also available with 850-fill for $100 less). Don't look for a temperature rating, though. The company says it's hard enough gauging a rating for single bags.
From the manufacturer: "The bag has 5 inches of loft, which is what our standard 20-degree bags have, but with two people inside the warmth rating goes up significantly. This bag has been tested extensively on Denali for the past five years and the feedback has been that it is plenty warm on that mountain for the athletes who were using it." Backpacker didn't hesitate to give it a 0° rating. In warmer situations—or with different temperature sleepers—each side is easily vented with a two-way zipper.
Like all Feathered Friends bags, the Spoonbill is hand-made in Seattle, which partly explains the, ahem, lofty price tag.