New York Yankees 1938 World Series New Era 59Fifty Fitted Hat in Navy & Green Under Brim.

 Logo: Glow in the Dark

100% Polyester

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.