I wanted a high visibility vest to wear over my motorcycle jacket. Cycle gear shops carried great looking vests at high prices. I didn't think the job required $80 of artisanal reflectiveness.
I bought a size Large to wear over an armored size 42 US leather jacket. It fits perfectly. Some folks in the reviews complain the zipper opens due to wind pressure, they suggest adding a binder clip to secure it. I have had no problems.
I should wear this vest whenever I ride.