|Specs||Small||Regular||Long||Regular Wide||Long Wide|
|Fill Weight (ounces)||850fp||900fp||850fp||900fp||850fp||900fp||850fp||900fp||850fp||900fp|
|Total Weight (ounces)||25.4||24.3||26.9||25.6||29.1||27.7||29.3||27.9||31.3||29.8|
|Loft Single Side||3.25"||3.25"||3.25"||3.25"||3.25"|
|Shoulder Width||54 inches (Similar to 63" mummy bag)||54 inches (Similar to 63" mummy bag)||54 inches (Similar to 63" mummy bag)||58 inches (Similar to 67" mummy bag)||58 inches (Similar to 67" mummy bag)|
|Hip Width||45 inches||45 inches||45 inches||49 inches||49 inches|
|Foot Width||39 inches||39 inches||39 inches||43 inches||43 inches|
|Packed Size||7.5 X 13 inches 9.5 Liters||7.5 X 13 inches 9.5 Liters||7.5 X 13 inches 9.5 Liters||8 X 14.5 inches 12.5 Liters||8 X 14.5 inches 12.5 Liters|
|Specs||Small||Regular||Long||Regular Wide||Long Wide|
|Fill Weight (grams)||850fp||900fp||850fp||900fp||850fp||900fp||850fp||900fp||850fp||900fp|
|Total Weight (grams)||720||686||763||726||825||785||831||791||887||845|
|Loft Single Side||8.3cm||8.3cm||8.3cm||8.3cm||8.3cm|
|Shoulder Width||137cm (Similar to 160cm mummy bag)||137cm (Similar to 160cm mummy bag)||137cm (Similar to 160cm mummy bag)||147cm (Similar to 170cm mummy bag)||147cm (Similar to 170cm mummy bag)|
|Packed Size||19cm X 33cm 9.5 Liters||19cm X 33cm 9.5 Liters||19cm X 33cm 9.5 Liters||20.3cm X 36.8cm 12.5 Liters||20.3cm X 36.8cm 12.5 Liters|
After hiking the Appalachian Trail and Pacific Crest trail back to back, I settled on the Katabatic Flex 15 to Thru hike the CDT this year. First off, I wanted this quilt since I first laid eyes on one. While hiking the AT and staying in the Roan High Knob Shelter, I witnessed a dozen hikers freeze overnight and barely get sleep except one. The one hiker whose quilt seemed larger then life and extremely lofty was using a Katabatic. The temps were low 20’s and the wind chill created ice cycles and a frozen roof on the shelter. The only warm hiker that night was my friend using the Katabatic. Needless to say, I’ve wanted one ever since. Not being able to afford the Flex on my PCT hike this past year, I watched several hikers express their satisfaction and warmth during those few months. I always told myself it was the next quilt I would buy. After purchasing the Flex and in comparison to the Big Agnes 15 degree bag I used last, I’m astonished. I’ve used this bag in lower 20 degree weather with no base layers and still felt warm. The loft and quality are top notch. My partners western mountaineering doesn’t seem as well built or comfortable. Save the money and buy the right gear the first time around. Thank you Katabatic for a beautiful piece of gear.
This review covers initial impressions only. Comments addressing function based on extended use is not in scope.
After reading multiple blog comments on-line and discussing options directly with company employees, I chose the Flex 15. I also reviewed certificates of down sourcing ethics. Of great concern was a long lead time prior to arrival based on a Quetico trip early spring requiring a bit more warmth. I was very surprised to see the box arrive within a few days of ordering! To blog comment accuracy, workmanship was excellent using great care and paying attention to stitching detail. Discussions with an extremely helpful and knowledgeable staff person resulted in 900 fill goose down and a suggestion that Katabatic will not cut corners to cut minor amounts of weight. I found this to be true in a positive way, for my needs at least, preferring less risk of better construction to carrying less weight. I have the XL version. I would not go smaller at 6'3" tall and 195lbs. In a quick test outside while snow was falling with a strong wind while wearing a T-shirt, the bag was quite warm yet breathable. A balance of fabric strength/durability and weight was achieved with the ability to move moisture off the user while preventing damage due to fragility. A well thought out philosophy. Looking forward to outdoor phased testing.
They look amazing, wonderful attention to detail will let you know how they perform for us after April and our first trip with them. they are so much more substantial than our other quilts, I have high hopes. and thank you for the quick service. Jimi
First night out with 26 degree temps I was actually too hot with mid-weight merino thermals - I had to vent some heat multiple times! Second night at 20 with a t-shirt and thermal bottoms, I was very comfortable - my head needed some extra layers, but that can’t be helped (I’d rather not carry a hood). At about 45 deg I had it loosely connected and opened the footbox, and by 60 deg, fully opened - which is why I wanted a quilt for the flexibility.
For sleeping pad, I have the thermarest z-lite foam pad that the quilt connects to and a Thermarest Uberlite small that I put inside the quilt with me - partially inflated for extra comfort. So my r value isn’t super high, and I’m so impressed with how warm this keeps me.
Anyway, huge upgrade for me, and that this is stil ~30oz mark for that kind of warmth is awesome. I got this with an extra 2 oz of overfill. I got the wide/tall - I’m 6’ 200# and active sleeper, so the space is great and clearly not affecting my warmth. Excited to continue using this.
It shipped within the time frame, and the build quality looks amazing. I would recommend this to anyone looking to get a quality quilt!
I’ve been able to test this down to the mid 20’s and am pleased with the quilt’s warmth, flexibility and especially the quality of construction. Would highly recommend to others.
Length: This refers to the maximum height of the user. For example, if you are 6’ tall, you should comfortably fit in our 6’ length, and the collar will loosely come up to your chin. If you are a stomach sleeper, you’ll want to add a few inches to your height since your toes will be pointed away from you, essentially making you “taller.”
Width: If your shoulder circumference measurement (around the widest part of your chest + arms) is 51” or greater, you’ll need to select a wide size. You can opt for a wide even if you don’t meet that measurement. Just keep in mind that if there is too much dead air space inside the quilt, you might sleep a little colder.
Fill Power (FP): Down with a higher FP number provides more loft, so we need less of it to achieve a certain temperature rating. Therefore, the finished weight of a quilt filled with a 900 FP option will be slightly lighter than one filled with the 850 FP down, but they would be equally as warm.
Duck vs Goose: Duck down is more readily available than goose, so it is less expensive. There are no performance differences, and one will not make your quilt warmer than the other. Note that our duck down is only available as an 850 FP, so the quilt would be slightly heavier (see above).
HyperDry: This treatment helps the down maintain its loft better in damp conditions, and helps it dry out faster if it does get wet. The HyperDry treatment is most useful for folks who will encounter a lot of humidity or rain, or will sleep numerous successive nights with lows in the teens (°F).