A puffy down feather jacket is one of the lightest and warmest things you can wear. But the tradeoff is that if you get it even the slightest bit wet, you'll be wearing a cold soggy mess. Not the Brooks-Range Mojave, though; thanks to a special coating on the feathers, it doesn't skimp on the warm when it's wet.
The feathers it's stuffed with are treated with a hydrophobic polymer known as perfluoroalkyl acrylate, developed by a company called Down Decor. So instead of absorbing water, the down inside the $US300 Mojave repels it. And while it doesn't guarantee you'll stay completely dry, the company claims the treated feathers will only absorb about a quarter of the moisture that regular down filling would. Which means your jacket will dry five times faster and be ready to warm you again in no time. [Brooks-Range via Popular Science]