The North Face Inferno 0F/-18C
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A dependable workhorse for zero-degree expeditions, this down bag is thirsty for cold-weather. Constructed with 850 fill goose down, this lofty down Summit Series® bag is designed with bomber, waterproof Pertex Endurance shell to prevent you from getting, or staying, wet in critically cold conditions. Most down bags lose their warmth when wet – this bag eliminates that.
Here's what other sites are saying:
The North Face Inferno 0 Degree Sleeping Bag is a competitive addition to our winter sleeping bag selection. A lightweight Pertex(R) nylon shell is not only lightweight and compressible but waterproof. This sub 3 pounds bag features 25 ounces of high grade 850+ Fill Goose Down for lofty warmth and compressible performance. 20D Pertex(R) Endurance ripstop nylon shell is lightweight and highly compressible Side-block chevron baffles Vaulted footbox enables natural foot positions to keep down lofty and therefore increase thermal efficiency Ergonomic heat trap Roomy expedition fit (52 inch shoulder, 72 inch length in a Regular) accommodates layers and extra length provides space for your boot liners Compression stuff sack doubles as a summit pack Tip: Get a bag 15-20 degrees cooler than what you are using it for if you are a cold sleeper
When minimal weight and maximum warmth are crucial, The North Face Summit Series Inferno 0? provides the highest level of protection and comfort with ultralight 850+ fill goose down and durable Pertex Endurance shell fabric.
The Inferno 0degF down bag from The North Face offers protection and comfort on expeditions in extreme conditions where minimal weight and maximum warmth are critical. Pertex(R) 20-denier nylon ripstop shell is lightweight and durable, and offers silky softness that enhances the insulation's loft. Waterproof, breathable Pertex shell features a Durable Water Repellent finish that causes water to bead up and roll off. Trapezoidal baffle construction evenly distributes 850-fill-power goose down and prevents cold spots by keeping down from shifting from side to side. Vaulted footbox allows natural foot movement and eliminates excess lateral space, increasing thermal efficiency to keep your feet warm and comfortable. The North Face Inferno sleeping bag includes a compression stuff sack that doubles as a summit daypack.