The 1988 Monsters of Rock was a festival tour featuring Metallica, Dokken, Scorpions, Kingdom Come and headlined by Van Halen. This WRIF sticker was released to coincide with the June 16th and 17th stop of the tour at the Pontiac Silverdome near Detroit, Michigan. WRIF has been giving out various bumper stickers in the classic "racetrack" shape for much of its 40 year history. Most feature a band's name or logo but some have included sports teams, DJs, and station slogans. The station's website has a section with many of their decals over the years. There are probably hundreds (maybe thousands?) of different WRIF stickers out there. Some people have even made a hobby out of collecting WRIF stix.