Isaora Microlight IR Down Jacket
Most companies' answer for "How to keep you warm" is to throw a bunch of down between some fabric and call it a day. But not Isaora. Their Microlight IR Down Jacket is filled with a Thermadown material that's treated with Celliant, a potent mix of thermo-reactive minerals that convert your body heat to infrared energy, which in turn promotes circulation, increases tissue oxygen levels, and helps regulate body temperature. Of course, all that's not going to do much good if you're soaking wet, so the filling is also treated with HyperDry to ensure that should any moisture make it past the ultralight micro ripstop fabric outer, it won't be reaching your skin.