" Can I ask how you get the down to loft? Do you just not compress the down?"
I have not taped or sealed the needle holes, and these allow plenty of air to enter/leave the balaclava. It is a *little* slower to loft, but not a big deal. So technically not 100% waterproof, but pretty close.
The quilt is from enLIGHTened.com, and uses the same technique for lofting, in other words it doesn't have a skunk stripe of Momentum like his other signature quilts. In fact, the balaclava was a testing ground to see if I could get away without a lofting strip of fabric. It worked so well I went ahead and designed the quilt the same way.
Oops, my bad, as Tim points out below, the link should be enLIGHTenedequipment.com.