GAINERS – Optimum Nutrition Serious Mass 6 lb Banana is an ultimate weight gain formula for those who need those extra calories but have a hard time consuming enough of them. With 1250 calories per serving and 50 grams of protein for muscle recovery, this Serious Mass is the ultimate in weight gain formulas. With 1,250 calories per serving and 50 grams of protein for muscle recovery support, this weight gain formula from Optimum Nutrition makes the ideal post-workout and between meals shake to help you achieve your goals. ON Serious Mass help you develop the physique you have always wanted.
Banana, Chocolate, Vanilla, Strawberry