32-33 in waist. What size is best ?

Definitely a medium. I am a 32 waist and it fits good. Even if i was a 34 there would be room. Any bigger than a 34 i would probably suggest a large

Where is this manufactured and shipped from?

They are manufactured in CHINA so they are shipped from there. When I ordered off Amazon I got them once within 3 days and others within 5. Nowadays you get a date, then it changes. It may come sooner, or later.

Do these shorts have a zipper anywhere? I noticed reviewers saying something about a zipper but I don’t see anything about a zipper in the description

Zipper, must not be the same shorts...the shorts I bought had not zipper. Draw strings and two pockets, although they are a little too short to my taste; as I wear them to the gym.

Im 230lbs and im 5' 4" what size should I use?

Hello, when I bough these i weighed 220lbs and I’m 5”9 I bought large and they fit just like the picture looks above the knee and close to the body I would suggest Large or if you want a loser fit X-Large or XXL