Mountain Hardwear  Bishop Pass GORE-TEX 15 Sleeping Bag

I own several sleeping bags, and have worked in the outdoor industry. My belief is most people shopping for a sleeping bag to be used in cold, wet weather, are likely going to be fine with the regular Bishop Pass, a terrific bag in it's own right, and not need Gore Tex. This bag is best used in very damp conditions. Be that a backpack in the Olympic Rainforest, or perhaps at altitude when the temperature hovers around freezing but there is high humidity, and dew and frost from condensation cover almost everything (this happens in mountaineering a fair amount). Or if you love sleeping cowboy style, or under a tarp. If you use a tent, that is going to do the trick for the majority of people reading this. Another factor to know is there are sleeping bags that are treated down, and/or a treated shell. In fact, one can buy a regular Bishop Pass, buy Nikwax Down Proof, and treat it yourself in a good, front-loading washing machine. This will make the bag somewhat hydrophobic, allowing moisture from condensation to bead right off the bag, or help the down keep from clumping even in high humidity situations. A few other key elements to clear up. While this is GoreTex Infinium (Windstopper) it is still 99% waterproof, almost exactly like regular GoreTex. It has a very effective membrane to keep water out. The seams are not taped, but the bag is effectively waterproof. While it is GoreTex, the fear that it will not breathe and you will overheat is mostly unfounded. Unless you are doing pushups in your sleep. It breathes plenty well. There is another misnomer that the bag is not as soft as other bags, this too is false. It actually feels quite nice, subtly brushed ripstop nylon. The cons? It's slightly more heavy than a regular Bishop Pass. In fact, you can find a quality 0 degree down bag that weighs less than this, for the same cost. It also does not compress as well, or small as a similar bag that is not GoreTex. It does however come with a compression sack.