Extreme Mass uses a scientifically advanced protein formula that feeds your muscle with 53 grams of amino packed protein in a steady stream lasting up to 3 hours. 70% of the total protein comes from pure Whey Protein Concentrate (WPC80) for quick absorption into muscle, and 30% comes from pure Micellar Casein for sustained release protein absorption. This product contains no inferior whey concentrates like WPC34 or WPC 60, whey concentrate, sweet whey, caseinate or other inferior proteins. We use the purest grade, non- denatured proteins, manufactured using a 100% cold temperature process, which keeps its micro-fractions intact and protects the integrity of the amino acid profile.