On Monday, December 31, 2018 at 8:34:54 AM UTC-8, Dan Marotta wrote:
Maybe things have changed (I don't doubt that newer fibers may be as
good as wool), but we were taught that leather was a terrible
insulator.Â* Maybe there's something inside your leather sailing boots
which insulates?

On 12/30/2018 9:01 PM, Jonathan St. Cloud wrote:
On Saturday, December 29, 2018 at 2:53:38 PM UTC-8, Dan Marotta wrote:
And nothing beats wool for staying warm.Â* It even keeps you warm when
it's wet.Â* A little tidbit from arctic survival school...

On 12/29/2018 1:38 PM, Charlie M. (UH & 002 owner/pilot) wrote:
I have done only a few flights above 13K' MSL in the east, never higher than that.
In other parts, 13K' MSL is a decent Soaring day.

So, I am NOT an expert!

Yes, metal rudder pedals can suck heat real fast.
Sunlight can help a lot.
Being damp (rigging, damp day, whatever.....) REALLY sucks heat.

I can only go by many years/miles hiking and likely lower flight altitudes for flying.
I will TOTALLY defer to others that think my "great altitude" is sorta the bottom of their "safe altitude".

Gotta think of where you are vs. where info is coming from.
--
Dan, 5J
Actually Dan, while wool is a great material for fabric, in technical uses it has been replaced by new technical fibers and will not absorb any water. I basically flying sailing clothes. Including wave flights in by leather sailing boots.

--
Dan, 5J

I know, leather seems terrible but hey, Yeti and cows do just fine. Link below, but I have put wet feet and socks in these boots and came off my watch with dry feet, winter. https://www.dubarry.us/ultima-leather-sailing-boots
These boots are from Ireland, two things they know are drinking and staying dry/warm.