A:
I where 36-38" pants for most everyday clothes. I usually buy hunting clothes one size bigger because of layering, shrinking in wash, ability to where belt/suspenders, etc. I'm also 6'5" so sometimes a 2X provides more torso length or inseam length so you might want to take your height into consideration. I bought a 2X on sale, was able to try on in the store and they fit well.