Optimum Nutrition ON Serious High Protein with Vitamins and Minerals Weight Gainers/Mass Gainers(5 kg, Chocolate)
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SERIOUS MASS is the ultimate weight gain and muscle building formula. With +1200 calories per 2-scoop serving and 50 grams of protein to support muscle recovery, this powder makes the ideal post-workout and between meals shake for sizing up your goals. SERIOUS MASS provides you with the tools you need to support your weight gain goals.
