is it a bad idea that winter leggings don't have any transpiration area, like some summer leggings do?

cross-posted from: https://feddit.de/post/10035653

be patient, because I don't know what the right word is: I mean the visible fabric of some summer leggings where everybody clearly sees that the fabric is porous in some parts, so humidity and heat escapes.

Absolute noob here regarding leggings, Im thinking about returning my asics winter leggings due to this, unless you tell me this is a stupid idea and Im gonna need al the heat I can save during cold weather and winter.