Stone Glacier’s New Chilkoot 15F Sleeping Bag test

[robby denning]

Well boys and girls, my new production series bag arrived. Checking the weather, tonight’s the last of the temps even near the 15-degree mark

So I pulled out the Skyscraper 2P with fly and set camp.

Same test bed as before: 15-degree Chilkoot on a thermarest on an E-cot

I’ll be wearing the same clothes as back in January/February testing: First Lite Fuse and Furnace baselayers, Obsidian pant, Brooks down sweater (they finally gave it a name), beanie, and lightweight soft shell gloves. And some Smart Wool socks.

Here’s some more pics of bag specs and off-season storage sack.

See you in the morning.

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[MuleyFever]

Cot . Why don't you sleep on the ground like the rest of us . Dang spoiled horsemen.

Great review. Was the weight of the production the same?

 

[robby denning]

Cot . Why don't you sleep on the ground like the rest of us . Dang spoiled horsemen.

Great review. Was the weight of the production the same?

Because I’m a big softie! Hahahaha. Haven’t weighed it yet but will. The prototype minus the 7.2 oz compression sack was: 2lbs 4ozs.


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[robby denning]

Hit the the sack at 1030 to upper twenties in temps. Zipped the bag up almost around my face, but did not close the internal collar with the magnet closure As I knew I wasn’t going to get cold.

By 3:00 am I was overheated to the point I had to unzip, & strip my gloves and beanie. I checked the temp on the weather app and it was 22 degrees.

After the ventilate, I fell back to sleep with the bag only zipped to my shoulders rather than around my face. Needed my beanie and gloves again but slept comfortably till alarm went off at 655.

Back in house, checked the actual outside temp and it was 21.6.

I see no indication that this production bag is any different than the prototype in the temp department. Looking back to earlier in my test, I was overheating in the bag when it was in the 20s. Now this is partly because I wear my clothes to bed, but that’s exactly how I hunt, and as I said before, I’d rather have to wake up and unzip a bag than have to wake up and try to put clothes on to get warm. Plus by taking advantage of my clothes, I can go with a lighter weight bag, compared to just sleeping in my base layers.

I’ll get this one weighed later today.


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[robby denning]

I weighed the new production bag (the prototype didn't come with a stuff sack, so I used my compression sack that weighed 7.2 ozs for that first weight in the review).

The new bag came with a stuff sack, it weighed 1.4 ozs. Bag in the sack, and I hit 2.4 ozs, so the math says my production bag on my scale is 2lbs 3ozs, an ounce less than advertised: https://www.stoneglacier.com/collections/sleeping-bags/products/chilkoot-15
Packability is great!

Next step was to soak this bag like what happened to the prototype bag. Using the garden hose, I hit it with about a quart then let it sit a minute. It pooled water across the baffles. I opened the bag and saw no indication of leaks, just like the prototype.

Amazing. You can see from in that last pic that the bag beads water, just like a good car wax. Still hard to believe it doesn't run through the seams. SG advertises "Vertical Pintucked Baffles ". Not sure what Pintucked means or of that's even what is preventing the leaks? I'll send them an email.

 

[robby denning]

I heard back from SG on what pintucked means (it's more for durability, but see next post for some water resistance engineering design stuff they sent):

"Pin-tucked seams refers to the sewing method in the construction of the baffles. Essentially what happens is at each baffle seam the shell material is folded and tucked in, then sewn so the thread is hidden in the tuck. This protects the thread from exposure and abrasion on the surface of the sleeping bag. You will notice on traditional sleeping bags you can see the thread from the baffle seams exposed on the outside of the bag. The concern there is that over time abrasion from laying on the ground may degrade those threads thus causing a baffle to seam to fail resulting in down migrating through the bag unevenly."

 

[robby denning]

And here are two factors that help with water resistance hat SG clarified on:

"Two other things worth noting that I don’t believe we mentioned before that are critical in the water resistance performance of the bags are the unique “Y” yarn construction of the Pertex Nylon shell and a Super DWR treatment that is applied to the textile. The Y yarn means that the yarn is manufactured in the shape of a Y. Traditional yarns are simply round. This is important because all these thousands of yarns shaped like a Y can fit more closely and essentially lock together versus if you imagine a bunch of round tubes laying together creating space in between each. That space creates more places for wind and water to penetrate. The yarn construction shaped like a Y drastically increases the water and wind resistance. This is also used in our Grumman Down Jacket and Pant."

 

[robby denning]

Final review is up on our homepage if interested. It's basically a condensed version of this thread, just a little more readable. Thanks everyone for following and if you buy this bag, feel free to post your experiences on this thread. You members are what make our reviews real and complete and as unbiased as possible.

https://www.rokslide.com/stone-glacier-chilkoot-15-sleeping-bag-review/

 

[thinhorn_AK]

Seems pretty useless to write up a review of a prototype rather than the actual product that will be available to consumers.

 

[Ryan Avery]

Seems pretty useless to write up a review of a prototype rather than the actual product that will be available to consumers.

Did you read the review? I'm guessing not if the color of the bag was the deciding factor I guess your right. Everything else looks to be the same.

 

[robby denning]

Seems pretty useless to write up a review of a prototype rather than the actual product that will be available to consumers.

This has to be a joke? Did you read the last 1/3 of the review?


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[thinhorn_AK]

Did you read the review? I'm guessing not if the color of the bag was the deciding factor I guess your right. Everything else looks to be the same.

color of the bag and the fact that they said the ones available to the public would be "tighter"...

 

[thinhorn_AK]

This has to be a joke? Did you read the last 1/3 of the review?


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Nah, stopped reading when I realized it was a prototype.

 

[Ryan Avery]

color of the bag and the fact that they said the ones available to the public would be "tighter"...

Haha!


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[robby denning]

Nah, stopped reading when I realized it was a prototype.

Well there’s your trouble. The last third of the review was all about the production bag.


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[MuleyFever]

I just love a super informative thread with some comedy thrown in at the end.

 

[twall13]

Seems pretty useless to write up a review of a prototype rather than the actual product that will be available to consumers.

Seems pretty useless to bash a review without reading it...

 

[thinhorn_AK]

Seems pretty useless to bash a review without reading it...

I started to read it, when I realized it was a review about a product that wasnt finalized I decided to wait. Sorry for having a different opinion than you.

 

[thinhorn_AK]

Haha!


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yeah funny huh? I mean they basically say the final product is going to be different than this one. Sorry if I offended you guys by not worshipping the review.

 

[Ryan Avery]

Your what’s wrong with half the world. You make an opinion on a quarter of the information available.

Don’t be sorry! Post less, read more.

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