MAMMOTH MASS Weight Gainer provides more protein, better carbs and far less sugar giving you more of what you want in a potent mass muscle building formula. With 60 grams of the finest whey protein isolate, whey protein concentrate, micellar casein and calcium caseinate available, combined with the MAMMOTH Clean Carb Complex featuring Quinoa, Sweet Potato, Oat Bran, it will have you primed with clean quality calories for MAMMOTH gains!