It took me a while to realize that there's a big difference between 'reflective' and 'hi-vis'. Reflective materials work at night by bouncing off of headlights, but the stuff is generally pretty dull looking during the daytime. Hi-vis (screaming yellow or green) material is not necessarily reflective in headlights but is HIGHLY visible during the day in any light.
I never ride in the dark, so I don't buy stuff because it has reflective strips on it. I buy stuff that's made of screaming yellow fluorescent colored material- like the Nightlife gear. It's shockingly bright during the daytime, when I ride. Nightlife items do have small reflective logos or strips here and there, but they basically work on the bright screaming yellow factor.