Sierra Designs Zissou 15
$260 regular, $280 long, 2 lb, 9 oz. (reg)
Sizes: regular and long
For years, I’ve rarely used a synthetic sleeping bag because they’re so much heavier and bulkier than down bags, and I’m not often out on the sort of extended, really wet trips where a down bag can get damp enough to lose its loft and warmth. But the advent of hydrophobic down could be a game changer nonetheless, and the Zissou 15 is among the first sleeping bags on the market to use down feathers that resist saturation.