RULE1 PROTEIN ISOLATE (EXP 12/26)Rule 1's flagship protein is made with super pure 100% whey isolate, fast acting whey hydrolysate, and virtually nothing else. It is completely omitted with the use of whey concentrates as well as creamers, gums, amino spiking, and other fillers that dilute what you really came for protein. The result is an industry leading Protein Purity Percentage (PPP) of up to 87%. R1 Protein is protein with a capital P.