OPTIMUM SERIOUS MASS, 5500g
High Quality Gainer With 50g Of Protein & No Added Sugar! With Optimum Nutrition Serious Mass, you've got nothing to lose and lots to gain. We've consolidated over 1,250 calories, 50 grams of protein, 250-plus grams of carbohydrates, and 25 vitamins & minerals with added glutamine and creatine into every serving. It's time to stop thinking small. Serious weight gain requires serious calories!