Product details

Serious Mass is the ultimate muscle building and weight gain formula. BENEFITS & FEATURES: With 1,250 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 gains goals

Optimum Nutrition ON Serious Mass 6lb Protein Powder

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Product details

Serious Mass is the ultimate muscle building and weight gain formula. BENEFITS & FEATURES: With 1,250 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 gains goals

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