Incredibly light and compressible 850 down fill, 2lbs 5oz bag for 3-season backpacking and alpineering in great condition. It’s served me well in-tent on summer and shoulder-season trips to the mountains and a few times in the snow. “Pertex Shield® shell face fabric works together with the Marmot MemBrain waterproof, breathable membrane to protect the down fill from snow, rain and condensation”. “Pertex Microlight® lining fabric is comfortable next to skin”. The item “Marmot Helium MemBrain 15 Degree Sleeping Bag” is in sale since Tuesday, November 15, 2016. This item is in the category “Sporting Goods\Outdoor Sports\Camping & Hiking\Outdoor Sleeping Gear\Sleeping Bags”. The seller is “clamccal-3″ and is located in Santa Cruz, California. This item can be shipped to United States.