what bag do you use for winter??

I'm just curious as to what bags you ladies use for winter since its comming around the corner! This is also for preparation !:yes: ( i like to think ahead! and since joining this forum i can't stop thinking about bags!:nuts:)

I think it'd be helpful to suggest possible bags so those who are unsure can get ideas!

For example, would leather be good? i.e. Louis Vuitton etc..
Also would you suggest people not use a certain materials in winter cause of the cold climate?? Anything would be great!! thanks!

LV monogram Petit Noe, LV monogram Piano or this