(dave) wrote:

has anyone had experience with heat shields (http://www.warmfeet.com)?

No experience with them personally, but they appear to be simple
radiant heat shields. I'm skeptical, since they don't provide any
conductive insulation to speak of. To prevent conductive heat loss,
consider a neoprene layer on the outside of the boot:

http://www.1-outdoors.com/Dry-Guy-Bootglove-Alpine.asp

I've been using a thick CoolMax sock liner under wool mountaineering
socks for a couple of years, and my cold toe problems haven't
resurfaced. You may not have enough space in your boot for that much
sock, though.
--
terry morse Palo Alto, CA http:/www.terrymorse.com/bike/