Kids winter coat help

[Odearr]

Where can I find a warm winter coat for a 7 year old that isn't super puffy / bulky or restrictive or basically in any way uncomfortable??
I can just about get him to wear a windbreaker arm but it's getting colder and he's going to need to wear a proper coat soon.
he won't even wear his school jumper most days either so just a polo and thin windbreaker type jacket isn't going to cut it for much longer but I don't want big arguments before school so it needs to be comfy

Didriksons are great but pricey. You can often get good deals on Vinted though. Not bulky, waterproof as well as warm and they have sleeves you can extend so they last longer. I have their Rio coats for both DC.

A thin puffer coat is probably your best bet, they are lightweight and not so puffy as to be restrictive or annoying. Something like this or Mountain warehouse have similar.

It won’t be as warm as some but he might at least wear it

If he’d wear a parka, M&S and Next have some nice ones.

M&S also have this one, which is so soft and furry inside, and felt quite lightweight - I think it was described as medium warmth rather than maximum warmth (it has better availability in the red and black):
https://www.marksandspencer.com/stormwear-fleece-lined-hooded-jacket-6-16-yrs-/p/clp60678232?color=NAVY