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REI Sub Kilo +20

rated 4.5 of 5 stars

The Sub Kilo +20 has been discontinued. If you're looking for something new, check out the best 3-season down sleeping bags for 2024.

photo: REI Sub Kilo +20 3-season down sleeping bag

Love this bag. I have a heavy bag (see below) and needed a great TRUE three-season bag for Colorado/ Wyoming mountain weather. I wanted LIGHT and WARM and SMALL. This is it. It really does live up to it's temp rating (IMHO). Packs really small. Good features. Just got back from Wyoming where it rained EVERY day and temps in the 30's. I stayed plenty warm.

Previously tried a North Face Flight… what a disaster. Barely warm enough for an indoors sleepover and completely useless outdoors in all but mid-summer at low elevations. Useless. This is smaller, lighter, and WAY warmer.

I have a zero degree Moonstone that is just awesome… but it's 3.? lbs and is the old Gore-Tex model (before they figured out that's not the best for down bags!). Frankly, it's more like a one season bag: winter.

Highly recommend this bag for what it is.

Design: mummy
Fill: down
Temperature Rating: as per specs
Weight: see specs
Price Paid: $215??

Absolutely loved this bag. Warm, compact and impervious to the elements. Now, I didn't float it down a river to see how it did in snow or anything, but I did sleep in 40 degree weather with windchill way below 20 degrees. And I was fine in just my long underwear. My only reason not to give it 5 stars and not return it for the Expedition, which would give me 66 inches in chest size vs 59, was its tightness on me making it very difficult to be comfortable in anything but a lying-on-back position...not my position. :)

Anyway, I'd totally recommend this bag for anybody under 6'3" and less than 56" chest size. Sucks for me cause I really liked this bag. Hope the Expedition is as plush and still lightweight.

Happy trails,

Design: mummy
Fill: 750 super
Temperature Rating: +20 F
Weight: 2 pounds
Price Paid: $249

This thing packs down to about the size of a volleyball, weighs under 2 lbs, but still keeps me comfortable and warm at night. Highly recommended. I got it a little over a year ago and have slept at least 45 nights in it (including a 3 week stay at a field lodge). It immediately became my favorite bag and I look forward to many good years in it.

Only complaint - the zipper stops about a foot or two before the bottom of the bag. This makes the bag lay a little funny when I poke my feet out the bottom in warm weather. Still, it is a great bag.

Design: Mummy
Fill: Down
Temperature Rating: +20 F
Weight: Sub Kilo
Price Paid: $110

This bag has done everything I have asked of it. I've slept comfortably into the low 20's and am proud to own it. I haven't been in conditions any colder than this yet, but I usually sleep under the stars and it has been comfy.

Seems the material is pretty tough, but tent up if bad weather is looming, it is not Gore-Tex. The bag is very lightweight and compresses to the size of a loaf of bread with the included stuff sack. I recommend this bag to those who are looking for a great value with no compromise in performance.

Design: mummy
Fill: 750 down
Temperature Rating: +20
Weight: two pounds
Price Paid: $200

It is a fair bag. I get a little cold in the head and toes but nothing extremely bad (but some nights it has kept me from getting a good night's sleep). I have tested it in snow once but most of my uses with it have been in the southern California winter and spring. Overall this is a good beginner bag. I would not buy it again, not because of its abilities but mostly because the REI employee thought that his long was the longest on the market (I'm 6'8") and it is very tight on my frame.

Design: Mummy
Price Paid: $260

Great bag. Light, tiny, warm. First use was a moist 35F in the Beartooths, chillier feet than expected, small hot water Nalgene sent me to dreamland in no time.

I've only counted 5 down fluffies in the past 5 months that I've owned it, literally, lots of use and still like-new. I do use a silk liner, just personal preference.

Price Paid: $170

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regular long
Price Historic Range: $169.83-$239.00
Reviewers Paid: $110.00-$260.00
fall 2010
regular long
Weight 1 lb 13 oz / 820 g 2 lb 0 oz / 910 g
Temperature rating 20 F / -6.7 C
Fill 750 fill-power down
Shape mummy
Max user height 6 ft 0 in / 180 cm 6 ft 6 in / 200 cm
Shoulder girth 57 in / 140 cm 59 in / 150 cm
Hip girth 53 in / 130 cm 53 in / 130 cm

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