Arizona Diamondbacks 2001 World Series New Era 59Fifty Fitted Hat (Glow in the Dark Maroon Green Under Brim) Size:7 1/8 the Black-and-Chrome version makes its

the Black-and-Chrome version makes its return this holiday season

Colorado Rockies 25TH Anniversary New Era 59Fifty Fitted Hat in Soft Yellow

So a hat combining both just makes sense

Houston Astros 45th Anniversary New Era 59Fifty Fitted Hat in Brick Red & Pink Under Brim

Arizona Diamondbacks 2001 World Series New Era 59Fifty Fitted Hat (Glow in the Dark Maroon Green Under Brim) Size:7 1/8 the Black-and-Chrome version makes itsArizona Diamondbacks 2001 World Series New Era 59Fifty Fitted Hat Maroon & Green 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.