Most recent THE NORTH FACE REVIEW. Mind blowing warmth-to-weight ratio. This bag has the most mind-blowing warmth-to-weight ratio. Nothing else on the market, even from cottage manufacturers, comes close. Feature-wise, it’s perfectly oriented for alpine climbing. The center zip allows for climbers to anchor while sleeping if the route necessitates it; it also allows for easy venting. The FUTURELIGHT zones for the footbox and hood do an excellent job at keeping the bag dry if the ends rub against a tent that’s condensated or iced over inside. The main fabric has a very tight weave; I didn’t notice any down leaking after twenty days of consecutive use. I stayed plenty warm at high camp for Kyajo-Ri, 18,000′, in Nepal with this bag and a Thermarest NeoAir Xtherm. It’s light and warm enough that it’s replaced my need for both 0-degree and 15-degree bags. Combined with a Cloud Down Parka (and pants) could likely push the temperature way, way down. It’s expensive, but it’s also a quiver-killer in that regard. The North Face. Bummed to sell – but moving and wont be needing a bag like this for a while. Aluminized 10D nylon body fabric accomplishes the same heat retention as its non-aluminized peers, utilizing 15% less down. Capped with recycled three-layer, waterproof, breathable FUTURELIGHTT for protection and warmth, the Superlight 10F sets the standard in alpine sleeping bags… Breathable, waterproof FUTURELIGHTT head and foot boxes. 1000 fill Goose Down. Aluminized nylon fabric reflects body heat for warmth. Shell: 10D Nylon With Aluminum Coating. Footbox And Hood:FUTURELIGHTT 3L-10D Recycled Nylon And 7D Recycled Tricot Backer. Total Weight: Reg 1 Lb 10 Oz (737 G). Insulation: 1000 Fill ProDownT; Certified To The Responsible Down Standard (RDS) By Control Union. This item is in the category “Sporting Goods\Camping & Hiking\Outdoor Sleeping Gear\Sleeping Bags”. The seller is “j-blual-kmju38au” and is located in this country: US. This item can be shipped to United States.