From NutraBio:
"Extreme Mass feeds your muscles with 53 grams of amino-packed protein in a steady stream lasting up to 4 hours. We accomplish this by combining whey protein concentrate (WPC80) for quick muscle absorption and micellar casein for sustained release and prolonged amino acid delivery. Our clean carb technology fuels your body with slow-release long-chain polymetric fraction carbohydrates with only 8g of sugar and just 4g of added sugar. Extreme Mass provides the necessary carbs and aminos to support positive nitrogen retention and muscle growth and repair."
(6lb)