Warbonnet dude--

[MedicineMan]

90s in TN....not where I live!
In fact at my house it has never been higher than 78F on my front deck.
Two weeks ago woke up to 49F and two days later on the AT woke up to 52F
coldest ever at Ripshin is -32F in 1982

[kirkerik]

Hmmm, usually quite cool here too. Upstate ny, foothills of ADK.

Warbonnetguy - that sounds like a nice material! I just saw a reflector for use w/ photography flashes - anyway this reflector of light maybe excellent for this application? I did not get a good look at it yet so I need to check it out - but it is as silver as a space blanket and looks like it might be vapor perm. - probably lightweight too since photographers are holding them all day.

Are you lookin for a vapor permeable option? This stuff might work?

for example:http://www.adorama.com/FPPR22SW.html

kirk