Im 5"10 180 pounds what size should i get

An L bro I’m the same weight and size as you, XL would be to big and if you’re on the slim side get an M if you want it to fit you slimmer

how much does it weigh?

The Global Windbreaker is super light and compact. It only weighs 6 oz which makes it great for traveling and on the go! The jacket can be packed into it's own pocket; equivalent to the size of a softball.

I wear 2x shirts and have larger mid stomach area. Do I have to order a 3x instead?

I ordered a 2X and definitely have a medium gut from Mexican food, it was very roomy in the waist but not crazy. I was fine with the shoulder fit ad true 2x, the stomach area was good and I have a 38 inch waist with mexium gut. Hope this helps. Great quality though

Are these true to size? Husband is an xl in shirts.

Yes, I wear 3xl shirts and ordered the same size. It fits well length wise. I have a bit of a tummy so it's a little snug there but fits well everywhere else.