TACVASEN Army Jacket Men Cotton Military Jacket Outwear Windbreak Green, US L/Tag 4XL

My fiancee is 5'7" and aboit 160lb. Do you suggest a medium or a large?

I’m 5’10” 185 athletic build and like my jackets to fit comfortably snug. What size do you suggest?

I’m 5”9” 50” chest 220# I work out so the belly is only an issue when I drink too many beers 😂 should I order a xxl

Is the jacket water resistant or does it need to be coated?