Additional question - It seems the best way to keep warm in cold weather is to layer natural layers with treated/waxed nylon or cordura on top. Does anyone have experience with this or know of an accessible guide online? Every post I find is linked to a shop or otherwise trying to sell something.

Also any info on the waxes to use (Parrafin, soy oil, synthetic beeswax, candelilla are all options I have come across) is appreciated!

I usually use thermals, but synthetics tend to increase BO which can suck if you're working up a sweat.

I'd be keen to hear anyone's suggestions on thick hiking/work socks btw. A day wearing gumboots tends to require the sacrifice of a pair of cotton socks or severe blisters :(

Shoes - ahimsa

I'll start by saying all my clothes are vegan but they are def not sustainable.

What kind of cold are you talking about? I live in a place that goes to -40C a few times a year, and this is what I generally use: I have a pair of snow pants that I love. I have a parka that goes down to my knees and has a thick hood. I wear boots that are rated for the cold, and might wear 2 pairs of socks. I wear a neck gaiter (those tube things) and a scarf. I have mittens, also works good if you want to keep a heat pack in them.

For every day, I have flannel lined jeans. I have cotton and synthetic sweaters, typically from a thrift shop. I would usually also wear an undershirt.

Some of the suggestions I already received -

Waterproofing - Waxed canvas, using paraffin

Vegan brands - Noize

Layering thinner clothes (always the way to go), with a rainproof layer on top