Marmot  Lozen 30 Sleeping Bag - Women's Long

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Designed for sustained cool, wet weather, the Marmot Lozen 30 women's long-length sleeping bag with water-resistant down keeps you toasty and dry whether backpacking, mountaineering or river rafting.


  • Updated liner fabric improves comfort
  • Insulated with certified 650-fill-power goose down with Down Defender to improve water resistance in wet conditions
  • Nautilus multibaffle hood is designed to limit heat loss from your head
  • Ground-level side seams wrap around your body to maximize warmth
  • Anatomically shaped footbox allows more wiggle room and less heat buildup
  • Internal stash pocket keeps small gear accessible
  • Women-specific fit
  • EN tested
  • Stuff sack included
  • Closeout


Temperature ratings are intended as a guideline to help you compare products, rather than a guarantee of warmth, since many different factors contribute to your comfort while you sleep. Backpacking bags are typically rated for temperature according to an independent testing protocol—currently International Organization for Standardization (ISO) 23537, though some older items followed European Norm (EN) 13537. Testing is based on a person wearing one base layer and a pair of socks, sleeping on an insulated surface with a minimum R-value of 5.38.

Each bag then gets 2 ratings: the Comfort rating is the lowest temperature at which the bag will keep the average "cold sleeper" comfortable, and the Lower Limit rating is the lowest temperature at which the bag will keep the average "warm sleeper" comfortable. Some brands determine their own temperature rating by aligning to the Comfort rating for women’s bags, to the Lower Limit rating for men’s bags, or somewhere in the middle for nongendered bags.
View all Marmot Backpacking Sleeping Bags

Technical Specs

Item #224007
Best Use


Tested Lower Limit

12.7 degrees (F) - EN

Tested Comfort

24.4 degrees (F) - EN

Temperature Rating (F)

24.4 degrees (F)

Temperature Rating (C)

-4.2 degrees (C)


2 lbs. 4.5 oz.


Ripstop polyester

Zipper Location


Insulation Type


Water-Resistant Down



650-fill-power goose down

Fill Weight

1 lb. 9.6 oz.


50-denier micro pongee

Sleeping Bag Shape


Fits Up To (in.)

72 inches

Shoulder Girth (in.)

63 inches

Hip Girth (in.)

61.8 inches

Stuff Sack Size

9.4 x 18.9 inches

Stuff Sack Volume

21.7 liters



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