Sierra Magazine - Zissou 0
November 15, 2012
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"More compressible and lighter than many synthetic bags"
"Snow can slash the effectiveness of any insulation. So the Zissou 0 sleeping bag by Sierra Designs has a water-resistant fill called DriDown. Though the fill isn't meant to be waterproof, in our tests, it stayed totally dry. The Zissou is also more compressible and lighter (3 pounds, 1 ounze) than many sythetic bags and should last you a decade or more."