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Posted by calamity on December 17, 2007 at 1:31:43 pm EST
In reply to Re: Cleaning an Older Down Bag posted by alan on December 17, 2007 at 10:24:36 am EST

From Western Mountaineering site: After proper washing and drying, "you will have a clean sleeping bag back to its original loft."

A highly respected company, and this is perhaps not an outrageous statement, yet it seems reasonable to suppose the mechanical stress placed on down in washing degrades the loft in some degree. The more often this is done, the greater the degradation.

Of course, dirt also degrades loft. And if a manufacturer advised consumers never to wash their product, they would be considered insane and sales would suffer. My father sold textiles strictly to finishing plants.

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