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Marmot
Marmot Nanowave 45 Sleeping Bag

Marmot Nanowave 45 Sleeping Bag

4.6· 192 ratings

Best price now

$49.50at JAXObserved at 2:11 PM

55% under what the other stores charge

Compared across 6 stores. Prices are checked against each store and labelled with when.

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Our take on the Marmot Nanowave 45 Sleeping Bag

The Marmot Nanowave 45 is a lightweight synthetic mummy bag rated to 45°F, built for warm-weather camping and travel. It weighs about 2.3 lb, packs into an included stuff sack, and has a water-resistant shell plus an internal pocket. At $49.50 at JAX as of November 3, 2026, it sits well below what a synthetic 45°F bag usually costs, so this is a strong price for a three-season warm-weather bag.

Best forSummer and warm-weather campingHostel and van travel where pack size mattersScout and car camping on a budgetBackpackers who want a cheap synthetic bag
Pros
  • Synthetic fill keeps some warmth when damp
  • Water-resistant shell handles condensation and light drizzle
  • Stuff sack and internal pocket included
  • Around 2.3 lb is light for the price
  • 45°F rating suits summer nights and indoor use
Cons
  • Not warm enough for shoulder-season or cold nights
  • Mummy cut is snug for side sleepers and broad shoulders
  • Synthetic fill packs larger than down
  • 45°F ratings assume a pad and base layers

Marmot Nanowave 45 Sleeping Bag prices at every store

  • JAXNew

    In stock

    $49.50Observed at 2:11 PM
    Visit store
  • REINew

    In stock

    $83.93Observed at 2:11 PM
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  • eBayNew

    In stockSold by shopcelldeals

    $89.95Observed at 2:12 PM
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  • Kenco OutfittersNew

    In stock

    $109.00Observed at 2:11 PM
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  • Backcountry.comNew

    In stock

    $111.95Observed at 2:11 PM
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  • MotoSport.comNew

    In stock

    $111.95Observed at 2:11 PM
    Visit store

Also available at

  • eBayCheck price at eBay
  • Appalachian OutdoorsCheck price at Appalachian Outdoors
  • BananaFingersCheck price at BananaFingers
  • EpicTVCheck price at EpicTV
  • Gearhead OutfittersCheck price at Gearhead Outfitters
  • Mast General StoreCheck price at Mast General Store
  • OliunìdCheck price at Oliunìd
  • Trekkinn.comCheck price at Trekkinn.com

Marmot Nanowave 45 Sleeping Bag price history

Lowest price we've seen: $49.50 on Nov 3 at JAX. Tracked across 13 stores since Nov 3.

What reviewers say

Owners rate it 4.6 out of 5 across 192 ratings, and the pattern is consistent: people treat it as a light, affordable summer bag and are happy with it at that job. Complaints center on warmth limits and the snug mummy fit.

Pros
  • Light and easy to pack for the price
  • Warm enough for summer nights
  • Good value for occasional campers
  • Stuff sack and pocket are handy
Cons
  • Too cold below about 50°F for some sleepers
  • Snug shoulders in the mummy cut
  • Loft flattens over time with heavy use

Specifications

Shape
Mummy
With Pocket
Yes
With Stuff Sack
Yes
Department
Men's / Unisex
Long
Yes
Water Resistant
Yes
Temperature Rating
45° F
Weight
2.3 lb heavy

Questions and answers

Is the Nanowave 45 worth it at $49.50?
Yes, if you camp in warm weather. That is a low price for a synthetic mummy bag with a stuff sack, and it undercuts most 45°F bags. It is not a cold-weather bag at any price.
How cold can I sleep in it?
The 45°F rating is a comfort limit, not a survival figure. Most people are fine on nights around 50°F and above with a pad and base layers; below that, add a liner or pick a warmer bag.
How does it compare with a down bag?
Down packs smaller and lasts longer, but costs several times more and loses loft when wet. The Nanowave's synthetic fill keeps some warmth when damp, which suits casual campers.
Does it come with a stuff sack?
Yes, a stuff sack is included, along with an internal pocket for small items. Packed size is larger than a down bag of the same rating.
Is the mummy shape too tight?
It is a standard mummy cut, so it tapers at the shoulders and feet. Side sleepers and broad-shouldered users often size up or choose a rectangular bag.
When is it cheapest?
Synthetic bags like this drop around end-of-season sales and clearance events. The $49.50 at JAX as of November 3, 2026 is already near the low end for this model.
Where is the Marmot Nanowave 45 Sleeping Bag cheapest?
At JAX, for $49.50, 55% under what the other stores charge, as of our latest check.
What do buyers say about the Marmot Nanowave 45 Sleeping Bag?
Rated 4.6 out of 5 from 192 ratings.
Where can I buy the Marmot Nanowave 45 Sleeping Bag?
13 stores we checked sell it, including eBay, JAX, REI, Kenco Outfitters, Backcountry.com.