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MLD Short Quilt/compressing Climashield XP

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Zack Karas BPL Member
PostedMar 26, 2009 at 11:36 am

I currently only have down products and am considering getting a synthetic MLD Spirit Short Quilt and was wondering just how much or little something like this can be compressed in your pack. Also, what is the life span of Climashield XP? 2-3 years with gentle use? More?

I'm comparing the MLD short quilt to the Nunatak Arc AT (Tom at Nunatak has been very helpful with discussing different custom options in regard to my concerns with side sleeping). I love the life span of down, so it may be the cheaper option in the long run.

When I first got into backpacking I had no idea that synthetics can be basically wrecked from over compression, and my first sleeping bag was synthetic (picture me using those compression stuff sacks with my full body weight on top to get it to a ridiculously small size). Needless to say, that 25 degree bag quickly became a 50 degree bag.

Jim MacDiarmid BPL Member
PostedMar 26, 2009 at 11:46 am

I was wondering about the compressibility of something like a Ray Way quilt myself.

This doesn't answer your question, but my 3 years of Boy Scout training didn't teach me anything about what compression can do to synthetics either. In fact, I stored my 1st synthetic bag compressed. For years. And then wondered why when I took it to Yosemite and it was 35 degrees I was freezing. I also stored my self-inflating mattress rolled up. Fortunately, both these things together coast me about $75. And weighed about 10lbs.

Ron Bell / MLD BPL Member
PostedMar 26, 2009 at 1:19 pm

Hi,

Climashield is very good at retaining loft after compression and is ofter touted as the best synthetic currently available at loft retention.

I too have older synth bags that never recovered after storing compressed but my 2 yr experience with the XP is that is is a LOT better than synthetics of even 5 yrs ago.

The key is to store them uncompressed. They should retain over 90% of the loft even after 100+ days of tight compression in the back pack while hiking.

The large factory rolls come slightly compressed in shrink wrap (about 2.5' dia) and even after a 1+ yr of that storage I cut off the shrink wrap and let the roll sit about 30min it swells up almost double it's wrapped size- and thats even before the roll is even unrolled any. It's like nuking a marshmellow Peep in the microwave!

—I have to make sure the roll is in the insulation room before cutting off the wrap or it swells too big to get through the door!

http://www.climashield.com/pdf/XP%20Spec.pdf

Peace,
Ron

Zack Karas BPL Member
PostedMar 26, 2009 at 1:24 pm

thanks for the response, Ron. Unfortunately, I am really leaning towards a down version as I live in Tahoe and humidity is non-existent.

PostedMar 26, 2009 at 2:40 pm

For longevity of Climashield, we're probably going to have to wait a few years to get feedback from the growing customer base, but I've only heard good things. I have a homemade jacket makde of 3.7 osy Climashield Combat and a 2.5 osy Climashield XP quilt and neither seem much worse for the wear after about a season and a half of use.

Climashield XP actually packs down rather small (for synthetic) without any compression. Think of this as being related to the way that the loft of a 40 degree sleeping bag, made of XP, is thinner than a bag with just about any other fill material on the market. At least in terms of inches of loft to degrees of warmth, XP is really something. It's just a very compact insulation. Always store uncompressed, don't over-compress in your pack, and don't expose to excessive heat, particularly while compressed (like in a hot car). I think if it's uncompressed in a hot car, it might be OK, but I don't really like running this risk with any synthetic high loft insulation.

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