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Marmot Aspen 15 Explorer

rated 4.0 of 5 stars

The Aspen 15 Explorer has been discontinued. If you're looking for something new, check out the best 3-season synthetic sleeping bags for 2023.

Great three season sleeping bag.


  • Wonderful three season bag


  • Zipper can be a pain in the ass

I slept out on the AT in Georgia, and it dipped to the upper twenties, and I was actually quite warm, despite the fact that I was sleeping on just a pile of leaves... My feet were cold, but other than that, I was comfortable enough.

I also slept out in Colorado and California through different seasons (but winter), and was very pleased with the warmth it provided.

Source: bought it used
Price Paid: $69.99

This sleeping bag is a waste of money. It MAY be warm down to 30F IF

  1. inside a decent tent,
  2. on a pad,
  3. with another person beside you,
  4. very low humidity. 

Otherwise, the 15F rating is a total misrepresentation.  A person would become hypothermic with this bag at that temperature. The "loft" disappeared after a couple of uses, the zipper snags easily, and it is obviously made for chumps in a mass market that doesn't know how to tell well-made gear from a hole in the ground.

Price Paid: $80 "on sale"

I bought this at Dicks and used it Jan 2010 on the AT in New York. It was 20F and snowing.

The Marmot Aspen Explorer 15F kept me warm at night. The temps dipped to about 10F early morning. I did sleep in base layer and fleece, with body warmers in my socks, and we were in an AT shelter. But that bag should keep you warm down to 20F.

It packs up small and light. and can't wait to use it again.

Design: mummy
Fill: synthetic
Temperature Rating: 15 F
Price Paid: $59 (floor model)

I give this bag a 5 star rating due to its warmth, durability, and affordability. I own several expensive down bags and this one is a true competitor! The price makes it so.

This bag is a pound heavier but is very warm and durable. I often take my two cattle dogs with me backpacking and this bag is durable. I do not have to worry about my dogs tearing the shell.

It's very warm for a 15 degree bag and has a cool color as well. Let's face it, style matters...Will use it this winter for some snowshoeing trips!

Design: Mummy
Fill: Climashield
Temperature Rating: 15 degree
Weight: 3lbs 7 oz
Price Paid: $79.99

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Price Reviewers Paid: $69.99-$599.00

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