ON (Optimum Nutrition) Serious Mass 6 Lbs
ON Serious Mass 6 lbs. provide you 1,250 calories per serving in water & 1,630 calories when made with low-fat milk.
It has 50 Grams of protein from a mixture of faster and slower digesting resources including Whey, casein, and Egg.
ON serious Mass helps to supply 250-plus grams of carbohydrates to support fueling of intense workouts and aid in the replenishment of glycogen stores - with No Added Sugar.












