Is a 2 mm box chain too thin for a man?

It is on the slim side. At 2 mm it reads as a subtle chain, best worn alone or with a small pendant. Men wanting a visible chain usually prefer 3 mm and up.

Will the stainless steel tarnish or turn my skin green?

Stainless steel is solid metal, not plated, so it does not flake or turn skin green the way plated brass can. It resists tarnish and rust, including with sweat and shower water.

What length is 18 inches and where does it sit?

18 inches sits at the base of the neck, near the collarbone on most men. It works well with a pendant but can feel tight on larger necks; a 20- or 22-inch chain sits lower.

Can I wear it in the shower or at the gym?

Yes. Stainless steel handles water and sweat well, so showering and workouts are fine. Rinse and dry it after heavy sweat or chlorine to keep the shine.

Does it come with a pendant?

No. This is the chain only, with its clasp. Any pendant needs its own bail wide enough to slide over the 2 mm links.

How does a box chain differ from a cable chain?

Box links are square and tightly fitted, so the chain lies flat and looks more geometric. Cable chains have round, open links and a looser, more traditional look.