Chasing the rainbow sets is one of the many fun aspects of the football card hobby! As a Player collector (of my Iowa State alumni), I try and collect many of the rainbows for my Iowa Staters! “Rainbows” are basically complete sets of every parallel that are produced – some of the most well known rainbow sets are Panini Prizm, Panini Optic, Panini Select, and almost every set has various parallels and inserts to collect! These many parallels create a “Rainbow” effect once many of them have been collected! See the picture nearby to see how far I’ve gotten on my Allen Lazard 2018 Panini Prizm base parallel rainbow!