Anaheim Angels 50th Anniversary New Era 59Fifty Fitted Hat is Graphite, Glow in the Dark, Purple & Grey Under Brim.

Logo: Glow in the Dark

How to make Patch Glow in the Dark:

Simply Expose Logo to Sunlight (or bright light) for at least one full minute to activate the green phosphorescent glow. The longer it is exposed, the longer and brighter the afterglow will be.