“Down feathers: one of the best weight-to-warmth ratios of any insulation existing in the outdoors world.  In case you don’t already know, one of the main problems that has plagued down since its discovery and extensive use in jackets and sleeping bags is that it becomes worthless when it gets wet (other than for a pillow fight maybe).  Fear not, feather lovers, a solution is at hand!  I put this new bag (which contains down insulation with an innovation hydrophobic coating called DwrDown) through the wringer…but not before I put it in the bathtub.  I gave this thing a real soaking before sacrificing (or so I though) a night of sleep on a 40-degree night.  But, I was astonished.  Not only did I not have a single cold moment during the night, but the bag was almost entirely dry by morning (so I actually never had to put it through the wringer).  The bag kept me warm, and the heat of my body was enough to dry it.  If you have ever tried this with regular down (and I don’t really recommend it), you realize that this advance is quite remarkable.  Sierra Designs boasts that DwrDown retains 34 percent more loft and 33 percent faster drying when wet, and I believe they may have actually undershot its true capabilities.  DwrDown leaves down without any competitor, including sythetics liek PrimaLoft.  No wonder it got Outside magazine’s “Gear of the Show” award at the most recent Outdoor Retailer trade show.