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Optimum Nutrition Serious Mass 6lb or 12lb


Serious Mass is the ultimate weight gain formula.

With 1,250 calories per serving and 50 grams of protein for muscle recovery, this instantized powder makes a sizable post-workout and between meals shake.

Serious Mass gives you the tools you need to pack on pounds and - when coupled with serious weight training - develop your physique to the fullest.

Product Features:
Adding Calories Has Never Been This Easy or Tasted So Good
1,250 Calories 50 Grams of Blended Protein
Over 250 Grams of Carbohydrates with No Added Sugar
Enhanced with Creatine, Glutamine, and Glutamic Acid
25 Vitamins and Essential Minerals

Whey Concentrate
Whey Isolates
Casein Proteins
Egg Protein

Serving Size: 2 heaping scoops (334g) (8 serves)
Serving Size: 1 heaping scoop (167g) (16 serves)