Pink bubble letters on pink background.
This groovy button is from a promotional 7-11 Slurpee advertising campaign. The drink was invented in 1965. 7-11 would promote new flavors of the drink, Pink Fink being one of their many promotional flavors, by having their staff wear large buttons and giving away smaller buttons. 7-11 began licensing the frozen drink from the Icee Company in 1967. The drink itself was invented in 1965.