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Therm-a-Rest
Oberon Sleeping Bag: 0F Down

4.8076923076923075 out of 5 stars
26 Reviews

Out of Stock

Don't worry though, we have a lot more Down Sleeping Bags in stock than that.

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Why We Like The Oberon Sleeping Bag

It's a shame we have to trek with a heavier backpack when we're trekking in freezing temperatures—winter attire is much heavier than summer—but at least the Therm-a-rest Oberon Sleeping Bag packs down to the size of larger water bottles. Its 800-fill down insulation is ridiculously lofty, compressible, and surprisingly light for how warm the bag feels. The down is treated with Nikwax for hydrophobic properties that keep the down lofty and warm in moisture-riddled environments. Therm-a-rest lined the bag in ThermaCapture to reflect our body heat back to us for a boost of warmth. You'd think this lightweight bag wouldn't come with any additional features, but the Oberon has sleeping pad connectors and blanket loops for fully-featured convenience.


Details

  • Lightweight, compressible sleeping bag for backpacking
  • 14F comfort range keeps you warm in freezing temperatures
  • 800-fill Nikwax Hydrophobic Down maintains warmth in humid climates
  • Zoned insulation places more down at the top than down low
  • SynergyLink connectors attach bag to sleeping pad
  • ThermaCapture lining reflects body warmth back to you
  • Internal pocket and loops designed for quilts or blankets
  • Toe-asis footwarmer box ergonomically wraps around your feet
  • Item #CAS00DN
Material
[shell] 20D polyester ripstop [liner] 20D polyester taffeta
Insulation
800-fill down, Nikwax hydrophobic treatment, ThermaCapture lining
Shape
mummy
Zipper
3/4-length
Max User Height
[small] 66in [regular] 72in [large] 78in
Shoulder Circumference
[small] 57in [regular] 62in [large] 65in
Hip Circumference
[small] 56in [regular] 57in [large] 58in
Foot Circumference
[small] 44in [regular] 46in [large] 51in
Bag Length
[small] 73in, [regular] 80in, [long] 85in
Draft Tube
collar, tube
Pockets
1 zippered
Pad Retainer
SynergyLink Connectors (removable)
Fill Weight
[small] 1lb 9oz [regular] 1lb 11oz [large] 1lb 14oz
Degree
0F
European Norm/ISO Comfort Rating
14F
European Norm/ISO Lower Limit Rating
0F
Storage Sack
yes
Stuff Sack
yes
Stuff Size
10 x 17in
Claimed Weight
[small] 2lb 4oz [regular] 2lb 7oz [large] 2lb 10oz
Manufacturer Warranty
lifetime

Overall Rating

5 based on 26 ratings

Review Summary

1 Stars - 0 reviews
2 Stars - 0 reviews
3 Stars - 1 reviews
4 Stars - 3 reviews
5 Stars - 22 reviews

What do you think about this product?

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3 out of 5 stars

October 2, 2022

Great down, poor design around zipper

Familiarity:
I've used it once or twice and have initial impressions
Size Bought:
Long left
Weight:
175

Like many 800 bags, this one is super fluffy and warm. However it has very little baffling along the zipper. Additionally, this bag is really wide so if you're laying on your back the bag has a tendency to pancake at the edge and leak heat along the zipper line. When camping in 30F degree weather, I'd put my hand along the zipper length and feel cold seeping in. I was still warm, but there'd be a 6" gradient of cold all around the zipper. If you're sleeping with clothes on you may not feel it, and maybe that's what this bag is designed for.

Roman P
5 out of 5 stars

November 1, 2021

Excellent sleeping bag

Incredibly warm. Some of the most comfortable, best nights of sleep I've had in the backcountry. The DWR finish on the outside sheds any moisture from condensation and the SynergyLink Connectors keep your pad attached perfectly. Packs down surprisingly small for such a lofty, warm bag and when paired with the Thermarest Trail Pro sleeping pad it had me looking forward to each nights sleep as much as the next days adventure. Couldn't be happier with it, thank you Thermarest!

Ian S.
a Cascade Designs brand site

Originally reviewed on a Cascade Designs brand site

5 out of 5 stars

June 6, 2021

The solution for "I'm always cold while camping"

I'd never been warm enough while snow camping until I got this bag. I have no more dread of being too cold now! I also use it to sleep in my unheated van, because sometimes you end up at Bryce Canyon in an 8F snow flurry. The water froze overnight, but I didn't!

Skibum C.
a Cascade Designs brand site

Originally reviewed on a Cascade Designs brand site

4 out of 5 stars

May 19, 2021

Perfect cold weather bag

Used a week in Colorado backpacking and tent camping at 8-9000' lowest temp was 27. Stayed comfortable inside with no cold spots at all. Packed down very small for a 0 degree bag. Only gave four stars because the zipper hangs in the material quite a lot.

a Cascade Designs brand site

Originally reviewed on a Cascade Designs brand site

5 out of 5 stars

May 10, 2021

Killer Value

Awesome value, packs small enough but is not going to be for the ultra minimalist who wants the lightest/smallest possible 0degree bag. It has worked well for PNW winter ski trips and spring mountaineering missions. Could be a little warmer but I just bundle up if it dips below 10.

Mtb S.
a Cascade Designs brand site

Originally reviewed on a Cascade Designs brand site

5 out of 5 stars

May 2, 2021

Great sleeping bag very warm

Great bag, we outfit and have used it on very cold nights and kept warm.

Jimmy O.
a Cascade Designs brand site

Originally reviewed on a Cascade Designs brand site

5 out of 5 stars

April 23, 2021

Worth every penny!!!

This is the best bag of it's kind on the market today. Worth every penny to invest in good quality gear, especially where sleep is concerned. Best toe box of any sleeping bag I have ever tried. Warmer than my MHW down bag. The color makes me happy everytime I look at it.

a Cascade Designs brand site

Originally reviewed on a Cascade Designs brand site

5 out of 5 stars

March 24, 2021

Warm and comfy.

Used it once. Got down in the 20s. No hint of getting cold. Zipper will unzip in the night if ya squirm, but awesome lightweight warm bag.

Poppa M.
a Cascade Designs brand site

Originally reviewed on a Cascade Designs brand site

5 out of 5 stars

March 17, 2021

Love the features, used it at 18F

I have used it at 18F and not lower temps. We snow camped and the inside of the bag stayed dry even though there was a lot of condensation inside the tent. I am a female and a cold sleeper, I found the shoulder to be a bit drafty. Maybe I should have added another layer on top, I was only wearing my base layer. This will be perfect for 90% of backpacking that I do, which is in WA winter and summer. Also good for summer mountaineering, like Rainier and Baker. I love the straps that can be used to secure the sleeping back to the air pad and the foam pad. I toss a lot, and wake up in the morning on the tent floor without the pads. That issue has been solved! Also like the zip pocket on the side for my phone and chapstick. Overall I am happy and recommend this bag.

Sarbari
a Cascade Designs brand site

Originally reviewed on a Cascade Designs brand site

4 out of 5 stars

March 11, 2021

Comfy but not warm enough

I am overall very happy with this sleeping bag; however, it seems that the temperature rating isn't as accurate as I would like it to be. I found myself waking up cold when the temperatures were in the upper 30s, seemingly well above the rating. Otherwise, the bag is great. The color is energizing, good loft, it packs well, and I am happy overall--though I've adjusted my temperature expectations.

a Cascade Designs brand site

Originally reviewed on a Cascade Designs brand site