Race boots have this reputation.
... Is it the thin liner?
... the type or thickness of the shell's plastic?
... the close fit that cramps the foot?
... or something else?
thin liner (less insulation), with a tight shell fit (less blood flow) = cold toes (but good performance)
Is there anything different in the formula for the shell's plastic that might account for reputation of causing cold feet?
How about the thickness of the sole? Cold can creep in from down there, too.
Wonder if boot boards are made of different materials?
I know my XMax's have very light weight and "airey" boot boards under the liner, so they would be more insulating than say a high density plastic. Do race boots usually have heavier more solid boot boards or do they even have removable boot boards?