I'm looking for some warmer cycling tights. The Sugoi Midzero tights are good for temps in the high 40s but for anything lower than that I get cold.

I do like the way the Midzeros fit, so I'm looking at Sugoi's Firewall tights. For folks who have them, are they good at blocking the wind? What's the coldest weather you find them comfortable for?

Thanks very much!!