In reply to jamesofdeath:
I moved from the Mantas to the Charmoz about 4 years ago so maybe the models have changed now but I found the Charmoz are slightly warmer than the Mantas but very little in it.
I run quite cold and have only experienced cold feet with them on a couple of times whilst hanging about on a belay for ages or long times of inactivity in Scottish winter.
The main advantage of the Charmoz is its weight rather than the warmth.
cheers
Gaz
Post edited at 11:55