not necessarily outdoors related question since citycuck
but how much difference does a base layer make in difference to cold?
last winter I was wearing cotton tshirt and underneath a fleece or even two + minimally insulated or just shell jacket I was not warm enough at what was most a -15c winter
my more insulated parka is breaking down and I was not about to buy one with winter ending right there and I used a cotton tshirt and same fleece underneath and was never cold, no wonder since it was purely more insulation but

why I wonder is I wanna get rid off clothing and be more minimalist but I don't think a shell jacket + fleece + a basic bitch poly/wool layer1 would be enough for this would it? you would keep something more insulating no?

am I overthinking how much difference a base layer compared to cotton will make? or will it be like magic?

should I just buy an insulated jacket and call it a day or should I layermaxx?