[pct-l] Water Repellents for Sleeping Bags

[Hiker97@aol.com (Hiker97@aol.com)]

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Actually, this is a question about spraying the Cocoon Silk Travel Sheet (6.3
oz., REI #618375).  I had some extra time on my hands and was thinking too
much again.  The idea occurred to me that it would be super smart if I dumped
my 32-ounce Marmot Arroyo down sleeping bag and got a Western Mountaineering
Highlite down sleeping bag (16-17 ounces).  Then I would use a silk liner as
an overbag to protect it, keep it clean, extra warmth and for some water
protection.  I choose silk because of the weight savings.

The deal is that I need to put some water repellent on the silk if I am ever
hiding under my tarp during rain.  Has anyone ever tried to spray silk for
something like this?

I am also looking at the Feathered Friends Chickadee.

Thanks, Switchback