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After a long day of slugging through fresh snow, set up camp, cook up a warm meal, and settle into the Sierra Designs Cal 6 800-Fill DriDown 0 Degree Down Sleeping Bag for a night of warmth and sleep. As snowy weather moves in overnight, the humidity in your tent can rise, but you'll stay warm and dry thanks to this bag's DriDown goose insulation.

  • EN rating is 6°F for the lower limit (an average man’s comfort level) and 18°F for the comfort range (average woman’s comfort level) for cold four-season camping in the backcountry
  • EN ratings are developed from procedures and testing conducted by independent organizations in the US and Europe
  • 800 fill-power goose DriDown insulation features a hydrophobic finish that enables the treated down to stay drier, loft better, and dry faster compared to untreated down so you're able to stay warmer longer in any situation
  • Insotect Flow construction features vertical down-filled baffles that help facilitate heat distribution more readily from head to toe than traditional side horizontal channels
  • Vertical channels also efficiently mirror the contours of your body, lessen down shifting, and reduce overall construction materials
  • FlowGate technology holds insulation in place for reliable warmth and comfort
  • Mummy-shaped bag decreases weight, cold spots, and packed size
  • A 10D ripstop nylon shell offers lightweight performance while a DWR coating supplies protection against early-morning frost
  • Ultralight jacket hood, ergonomically-shaped footbox, and draft tubes and collar insulate your body and prevent the cold from seeping in
  • Thermally-efficient 40-inch, snag-free zipper offers an easy in-and-out
  • Collar drawcord with captured cordlock lets you cinch the hood and collar down around your face for a snug fit
  • Includes storage and stuff sack

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Sierra Designs Cal 6 800-Fill DriDown Sleeping Bag: 0 Degree Down

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Here's what others have to say...

5 5

AWESOME sleeping bag

  • Familiarity: I've put it through the wringer

This is a really warm, really light sleeping bag. I'm not normally a fan of the full mummy shape (I'm 6'3") but this is cut somewhat generously so I sleep pretty comfortably. It's really light for the warmth it provides.

4 5

Good so far

  • Familiarity: I've used it once or twice and have initial impressions

Got this bag to replace a North Face Snow Leopard. By comparison, this bag is the godhead :P Just as warm but a 1 lb lighter and consumes 24L less volume in my backpack. I've taken it on 2 overnight trips; Mt. Baker and Mt. Daniel. I run cold but roasted when temps were 38-40F one night. The bag is really comfy for me when temps are in the mid 20s. Haven't had a chance to test it much below that yet. Seems like the stuff sack it ships with is a little large and could stuff down further with another sack, but it's fine as-is in a 60-70L pack.