This is the Gorilla Glue #4 cut that came from Dark heart nurseries in California. It was then forced to produce female pollen and pollinate itself. S1 means Self pollinated 1st time.
So what does the above mean for you? It means with this pack you will get killer feminized beans that come only from GG#4 genetics, but that being said every bean will contain gorilla glue, but due to Pheno type variation you will still need to pheno hunt if you want the #4.
No smoke and mirrors here, just fire genetics and honesty!