Mountain Equipment  Nova II Sleeping Bag - Men's Long

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Lightweight, spacious and comfortable, this Mountain Equipment Nova II long-length sleeping bag retains the low weight and compressibility needed for backpacking all while maximizing its warmth.


  • Polarloft® insulation helps maintain warmth even while wet
  • HELIUM™ 20-denier outer shell is light and highly breathable
  • Keystone shingle construction offers the greatest warmth for the minimum weight
  • Offset layer construction underneath
  • Mountain Fit is both spacious and thermally efficient
  • Anatomically shaped hood and footbox
  • Integrated collar with Lode Lock™ closure
  • Full-length zip baffle
  • Includes a lightweight compression sack
  • Mountain Equipment is a member of Fair Wear Foundation, a European initiative working to improve workplace conditions in the garment and textile industry
  • 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 Mountain Equipment Backpacking Sleeping Bags

Technical Specs

Item #205565
Best Use


Tested Lower Limit

27 degrees (F) - ISO

Tested Comfort

37 degrees (F) - ISO

Temperature Rating (F)

27 degrees (F)

Temperature Rating (C)

-3 degrees (C)


3 pounds


20-denier Helium nylon

Zipper Location


Insulation Type



Polarloft synthetic fibers


30-denier nylon

Sleeping Bag Shape


Fits Up To (in.)

79 inches

Shoulder Girth (in.)

31 inches

Hip Girth (in.)


Stuff Sack Size

11 x 9 x 7 inches



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