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  1. #1
    Senior Member stevebo's Avatar
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    Can synthetic insulation be damaged by compressing it too much?

    Yet another question.............can you over compress synthetic insulation, and damage it permenantly? Where do you draw the line as far as how far to compress it?

  2. #2
    Ramblinrev's Avatar
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    the short answer is yes. Anything that depends on loft will suffer if it is compressed for too long. Always store insulation loose.
    I may be slow... But I sure am gimpy.

    "Bless you child, when you set out to thread a needle don't hold the thread still and fetch the needle up to it; hold the needle still and poke the thread at it; that's the way a woman most always does, but a man always does t'other way."
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  3. #3
    Senior Member stevebo's Avatar
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    What about in your pack? Long term at home, I always store my quilts loose, but I wasnt sure about in a stuff sack in your pack, how small to compress it.

  4. #4
    Ramblinrev's Avatar
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    IMO... the compression in a pack is short term. Often for less than a day given the use of the item every night. While there is probably a theoretical degree of loft damage everytime you pack your quilts/sleeping bags there is no real alternative option that makes any sense. It's the long term storage that is the problem. Even then... things are stored compressed in the manufacturers warehouse for some time. I don't know what the time frames are before damage is permanent.
    I may be slow... But I sure am gimpy.

    "Bless you child, when you set out to thread a needle don't hold the thread still and fetch the needle up to it; hold the needle still and poke the thread at it; that's the way a woman most always does, but a man always does t'other way."
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  5. #5
    Senior Member headchange4u's Avatar
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    I think any insulation, synthetic or down, can be damaged by over compression.
    “Light thinks it travels faster than anything but it is wrong. No matter how fast light travels, it finds the darkness has always got there first, and is waiting for it." -Terry Pratchett



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  6. #6
    Senior Member KerMegan's Avatar
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    but can you achieve that level of comression just using your hands, or a compression sack? I mean- park a truck on top of it, and yeah- damage can result, but who gets that much pressure just putting it away in the pack?
    Wondering about the salient parameters; KM

  7. #7
    Senior Member Cannibal's Avatar
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    My synthetic Yeti lost some loft after my AT hike. Not a ton, but noticeable after being packed daily for 6 months.
    Trust nobody!

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