What are you wearing !! For fab work

Where I work the lads who do the welding by hand (as in not operating auto welding machines) wear work supplied denim affairs. Which come from either Arco or Cromwell as that's where a majority of out stuff comes from.
Something like this...

www.zoro.co.uk/shop/personal-protection-and-clothing/coats-jackets-and-fleeces/biz2-bizweld-xxl-navy-jacket/ps/ZT1172712X?utm_campaign=pla-Personal+Protection+%26+Clothing+-+&utm_source=google&utm_medium=pla_css_3&utm_keyword=ZT1172712X&istCompanyId=6aa6787b-063e-4414-802d-129f235df603&istFeedId=8719e243-9ed6-485d-b654-4023447f0a65&istItemId=wximlqwmi&istBid=tztx&gclid=EAIaIQobChMI066bksmQ4gIVqLXtCh2sWQOGEAQYDCABEgIWqPD_BwE&mkwid=jAHVlp8s-dm&pcrid=314501958898&prodid=ZT1172712X&pgrid={groupid}&ptaid=pla-393534721080&gclid=Cj0KCQjw0brtBRDOARIsANMDykZsEGf7i2ZB39OL5LrliFU_xwyrB7POJTNn1_y_p-8Bwwx0jNQw-e8aAnpUEALw_wcB

Blimey, that's a big link.

I find jeans to be the most hard wearing on the lower half. I got some cargo type trousers from aldi and they arent very resistant to welding sparks. upper half I don't have a good answer, like you ive got a collection of fire damaged hoodies and fleeces.

Make sure whatever you wear is cotton not polyester or nylon as they both melt and burn far too easily..

The company I work for provides boots and overalls.

The first blue jacket is sort of industry standard , eithe jacket and trousers or as said big blue overalls which you get big for movement and layers underneath. All made from some sort of cotton that's treated to be flame retardant. It will slightly smoldering but not ignite . Bare in mind its gets less with each wash.
It's all cheap as well. Carhartt stuffs ok I would consider it if your going to be doing it every day and making some bucks .it does stand up to abuse for a good amount of time.
I have worn all sorts , generally a combination of comfort , warmth and cost. I really would go with blue overalls or jacket with layers under for warmth if needed.
Also consider a grinding/welding hood , like a protective balaclava or hood like the royal navy where that covers your head and shoulders. Stops UV light on your neck and grinding dust weld etc going down your neck. Much nicer at the end of the day not being covered in muck.

For welding I have a good quality fire retardant welding jacket - I don't like the leather ones has they are difficult to move around / work in - for general comfort through winter you cant fail with a set of 'Norde' thermals - about £25 - £30 on Amazon and worth every penny (I look like an Olympic skier in them) - fully breathable will keep you just at the right temperature - Over these I wear my normal polo shirts & work trousers - Dewalt boots are often on offer at Costco and are my preferred brand @ circa £35 and last me a full 12 months of constant use

I use Nomex coveralls/boiler suit they are flame proof/retardant and mine have a hood on them so if you are welding over your head it doesn’t go down your neck and back. The nomex keeps me very warm I only wear shorts and t shirt under them and working out side all year round and haven’t been cold and they are good for moving around in