Arizona Diamondbacks 2001 World Series New Era 59Fifty Fitted Hat Teal & Lavender Under Brim. Glow in the Dark Logo

How to make Logo 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.