Tanager 20 CFL Sleeping Bag

Tanager 20 CFL Sleeping Bag

Regular price Sale price$469.00
42 Reviews


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We designed the Tanager to meet customer requests for a pared down, ultralight 20 degree sleeping bag. When we started sourcing materials for this bag we thought no way will a 7 denier fabric hold up to the abuses of a long haul hike...but our testers on the PCT and CDT proved us wrong. The incredibly light fabric, premium 950 fill down, and streamlined design that foregoes a zipper and hood makes this the bag you want in your pack if weight is the ultimate consideration. For maximum efficiency and warmth in cooler temps, pair the bag with a lightweight, hooded down jacket, like the Eos. 

Ideal for: Thru Hiking, Ultralight Backpacking, Alpinism, Emergency Bivy 

CFL: Crazy Freaking Light. Pertex® Quantum® 7 denier water-resistant/breathable fabric. 


  • Drawcord closing around the collar to cinch down opening and keep heat in.
  • No zipper to conserve weight and bulk
  • Made with new Pertex® Quantum® 7dx5d fabric with DWR
  • May be worn with a lightweight hooded down jacket for additional warmth. Designed to be worn with our Eos jacket.
  • Intended for ultralight hikers and alpine climbers for whom every ounce counts.
  • Color: Citron
  • Stuff sack and cotton storage bag included

Additional Info

Interior Length 68" 68" / 173 cm
74" 74" / 188 cm
Dimensions 62" shoulder / 52" hip / 38" footbox
Zipper None
Shell Pertex® Quantum® 7
Lining Flite 15 denier ripstop nylon
Fill Power 950+ Goose Down
Origin Made in the USA from imported materials
Temp Rating 20ºF / -6.67ºC
Fill Weight 68” 12.6 oz / 357 g 
74” 13.3 oz / 377 g
Average Weight 68” 1 lb 2.6 oz / 527 g
74” 1 lb 3.7 oz / 558 g
Packed Size 6L


Customer Reviews
4.7 Based on 42 Reviews
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Jo F.
United States United States

Comfy cozy neon caterpillar

I love this bag! I have had it out on several shorter backpacks and now a longer trek. I used to fight my sleeping bag into a stuff sack and sap my strength in the mornings trying to get it into my pack. This gossamer bag is a dream to stuff and stow. I have always slept cold so took this on a trek to Tajikistan where nighttime temps predicted and were in the high 30s to mid-40s. I roasted on the warmer nights. I had to get out and sleep under it for a while one night, but was comfy cozy on the colder nights. I am not quite 5' 2" so I can actually mummy myself in this bag. I then become the neon caterpillar. I am thinking of a down quilt for my husband and I to share over the top in colder weather as a lightweight stuffable option to us both carrying 5 degree bags. We may test that out this winter in a lower stakes environment. My husband has the cousin to this bag, with a zipper. He is very happy that he has the zipper. I was going for lightest most packable. -- Also, a fond shout out to the Mont Bell Women's medium down pants that I purchased at Feathered Friends in the store. They were the perfect weight and warmth for post-exertion in camp in the cool of the evening.

  • How would you rate the quality? Not greatExcellent
  • Warmth Not WarmExtremely Warm
  • Fit Runs SnugVery Roomy
United States United States

Great overall but wish there was better sizing information

LENGTH: I'm 5'10" and got a 68" length. When I tried it at home it seemed like a good fit but when using it in the field and snugging up the neck enough to avoid drafts it is a touch short, my feet press too much against the bottom and it makes a cold spot. So if you are any taller than 5'9" I would definitely recommend going up to the 74" length. Before purchasing I even contacted customer support to ask about this but they said they couldn't provide a height to length guideline even though they do so for all their other bags. TEMP RATING: I've used a variety of bags from Feathered Friends, Western Mountaineering, and Katabatic and generally find that their temperature ratings are accurate for me if I'm wearing base layers (and a down hood if the bag doesn't have a hood). The Tanager is an exception, I think the 20 degree rating must include wearing an Eos or other mid-weight down jacket. Without a jacket I think a 25-30 degree rating is more inline with how other FF bags are rated. I use a 30 degree quilt in the summer (Katabatic Palisade) and a 10 degree zippered mummy in the winter (Lark), so this gets used for light and fast spring skiing and fall mountaineering trips. When paired with a NeoAir Xtherm, a Montbell down jacket with 6oz of fill, and lightweight down booties I am comfortable sleeping on snow down to 20 degrees. If I'm just wearing a base layer and a down hood it's only comfortable to 30 degrees or so. I'm on the skinnier side but have room to wear a mid-weight down jacket while also keeping ski boot liners next to my torso. The only thing I'd change is that the differential cut seems fairly small, it's much easier for my elbows to make cold spots in this bag than any other I've used. I'd guess that was part of the weight savings tradeoffs but personally I'd take a touch more weight in exchange for a better differential cut.

  • How would you rate the quality? Not greatExcellent
Scott G.
United States United States

very technical bag that works

First of all: me: 61 yrs old, 5'10" 190 lbs. kinda broad shoulders, long torso, long arms; I chose the 74" version. This bag rocked it on a 5 day trip in Kings Canyon and was so warm even on the coldest night (randomly plummeting temps camped on damp ground in a bowl- lake above 10,000 ft which "featured" snow/ice fields everywhere with runoff requested- and granted) on a Thermarest x-light NXT pad (jury out on that one). Second of all: I never open my bag at night to vent even though I sleep warm and generally never need to sleep with leg(s) sticking out etc. or use my bag as a comforter... and I have kind of an arsenal of bags. My goal with the Tanager was simple: sleep in a tube with super high quality down and minimal weight and the Tanager NAILED it. I quickly figured out the optimal sleep scenario for my body was a merino hoody, briefs, and nothing else. I was perfect and the bag breathed better, that way. I will add that condensation was not a hindrance even the one night I had that in my tent, with a simple microfiber cloth I wiped off "the wet" on the top sections of the bag and was able to lay the bag out in the morning after sun-up for a half-hour before stuffing it back up in the pack for the day. My recommendation is this: if you are tied to one bag or maybe even two - at the most - I don't know if this is for you. If you are *not* claustrophobic and can sleep in a "tube" and are reasonably certain the temps are going to be on the colder side (whatever that means for you) just know the bag works, as designed. If you are even a touch claustrophobic, look into the Flicker, which I also have, or a bag with a full zipper. For me, having a 20 degree bag that weighed just under 20 oz was critical given my age, my weight, my fitness-- and I didn't mind wriggling into (and out of) a long sleeping "tube" -- plus the fact bear canisters were mandatory (and micro-spikes) which added weight I otherwise would not have had to carry in my pack. In short, happy with my purchase. FF makes great stuff. Other FF gear I own: Flicker (UL "wide" 30 degrees), Condor (YF long, 30 degrees), and EOS '23 hooded jacket, size XL)

  • How would you rate the quality? Not greatExcellent
  • Warmth Not WarmExtremely Warm
  • Fit Runs SnugVery Roomy
United States United States

Tanger 68in over stuffed with 3 additional Oz of down

Excellent, in 5’ 9” and the 68in fits me perfectly! So warm and very comfortable. Amazed by how well it lifts and ultra light weight!

Scott S.

My go-to 3 season bag.

I’ve had my Tanager for two seasons and a couple of dozen nights, including nighttime temps into the mid- to upper 20s. Used as it’s supposed to be used—with a light hooded down jacket, warm thermal pants and some down socks—the bag is a champ. On one night of 32 degrees I took the down jacket off and just put on a cap as I was too warm otherwise. In a pinch I can even use it during temps in the 50s by simply leaving more of my upper body out of the bag. The quality is terrific, the zipless design was easy to get used to, and the weight was exactly as advertised. If you’re looking for a super lightweight 3-season bag, this is it.

  • Fit Runs SnugVery Roomy
  • Warmth Not WarmExtremely Warm
  • How would you rate the quality? Not greatExcellent