Optimum Nutrition Serious Mass - Banana, Bag, 5450g

This calorie rich, muscle building formula packs a powerful 1250 calories per serving. With no added sugar it is still an awesome way to build lean muscle mass, and can be used to increase calorie intake or substitute meals when you're on the go

• Optimum Nutritions premium weight gaining formula
• 1250 calories per serving
• 50g of protein and 250g of carbs per serving