Optimum Nutrition Serious Mass Weight Gainer - Chocolate flavour - 3KG

For Weight Gain and Muscle Building Goals

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.

For Those Who Are Serious About Gains

This is not a low-calorie formula and not a protein supplement. Designed to support high calorie high protein diets and needs.