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Big Cottonwood Sleeping Bag: -20F Synthetic

5 out of 5 stars
6 Reviews
Current price: $174.99 Original price: $249.99
30% off



Why We Like The Big Cottonwood -20 Sleeping Bag

Even the heat of the generator can't always keep us warm. On our coldest nights camping in the trailer, we bundle up in the Big Cottonwood -20 Sleeping Bag. Its hefty weight and lofty insulation make us feel extra cozy while we're tucked inside, and soft-touch fabric provides the same feel as our bedsheets back home. The adjustable shoulder baffle and removable hood let us customize our comfort, sealing in heat or allowing extra airflow.


  • Burly sleeping bag for extra-cold nights in the camper
  • Polyester fabric offers plush comforter-like softness
  • Heavy synthetic insulation traps heat in below-freezing conditions
  • Rectangular shape for a spacious, stretched-out sleep
  • Detachable hood and drawcord shoulder baffle to block cool drafts
  • Carry bag included to make hauling this comfy sleep system easier
  • Item #KLTE01B
420D polyester canvas
rectangular, removable hood
Max User Height
Shoulder Circumference
Hip Circumference
Foot Circumference
Bag Length
Draft Tube
drawstring shoulder baffle
Pad Retainer
Fill Weight
12lb 2oz
Storage Sack
Stuff Size
40 x 16in
Claimed Weight
weekend camping
Manufacturer Warranty
limited lifetime

Overall Rating

5 based on 6 ratings

Review Summary

1 Stars - 0 reviews
2 Stars - 0 reviews
3 Stars - 0 reviews
4 Stars - 0 reviews
5 Stars - 6 reviews

What do you think about this product?


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5 out of 5 stars

October 25, 2023

Awesome bag

[This review was collected as part of a promotion.] Just camped 7800 ft kept me warm slept like I was at home

Robert M.

Originally reviewed on

5 out of 5 stars

November 15, 2022

Does the job!

I used it for the first time this past weekend in single digit temps in the back of my truck. The weight helped with the insulation and kept me warm for 4 nights. Slept like a baby. Highly recommend!

Originally reviewed on

5 out of 5 stars

September 24, 2022

Like a brick house

This is probably the most robust sleeping bag I have owned. I bought 2 just so I can zip them together and I felt like I brought a nice quilt for camping. the only down side to it, at least in my case, was its size. it was overkill for my trip to Yosemite in august, and it took up a decent amount of space and weight for a midsized sedan. but great for a camper van that we take sometimes. just look at the specs when you buy it cause 2 of them is about the size of 1 adult

Originally reviewed on

5 out of 5 stars

April 24, 2022

Excellent room and a true

Excellent room and a true cold weather sleeping bag for my Wall tent camps.

Eric F.

Originally reviewed on

5 out of 5 stars

September 28, 2021

I’m I’m love

I absolutely love this sleeping bag. Perfect fit for my teardrop. The materials and workmanship are perfect. I can’t wait for single digit temperatures to test it. I’ve never been disappointed with any Klymit products.

Originally reviewed on

5 out of 5 stars

September 25, 2021

Huge and Roomy!

This is not a piece of gear to take backpacking, the thing is HUGE! So getting that out of the way this is the BEST car camping sleeping bag I have seen. Plenty of room, well made and hopefully no cold spots! Seems super rugged and the stuff sack ( if I can call it that maybe able to double as a hammock! Pretty neat way they designed it, so A+ there. Keep it up Klymit, we Love your gear!

Originally reviewed on