It seems Strictly Fitteds has been loving the Grenade Irie Halfer Hat; featuring it in each of the colorways (also in White, and Olive).

From StrictlyFitteds.com:

The snowboarding based brand, GRENADE, is back with another colorway for their “Irie Halfer” styled fitted baseball cap in Black/Rasta. This New Era 59Fifty features a Black base with a Rasta colored grenade embroidered onto the front panel of the hat. If you’re interested in picking this up, you can grab yours now at http://www.planet-sports.de/