Men's Journal- Zissou 15
May 17, 2012
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The Down Bag That Stays Warm, Even When Wet
By treating feathers with a molecular-level polymer, Sierra Designs has remedied down's fatal flaw: It's inability to retain warmth when wet. Whether moisture comes from inside the Zissou 15 bag via perspiration or seeps in from the outside, the high-tech fill can stay dry seven times longer than standard down.