Daniel Guigui and Andrew Payne's Water-Repellent Down

Guigui and Payne produced the first water-repellent down, DownTek, which will still keep you warm when wet
Guigui and Payne produced the first water-repellent down, DownTek, which will still keep you warm when wet Photograph by Ryan Lowry for Bloomberg Businessweek

Was it a long process, figuring out how to make this stuff?
Guigui: A [water-resistant] down has long been the holy grail—I think if you talk to most outdoors enthusiasts, down is the preferred insulation, except when it’s wet, and it takes a long time to dry. Everyone’s been playing with processes, treatments, chemicals. We’d been playing with that stuff for five years, and we finally found something that worked.

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