Serious Mass

Optimum Nutrition has some of the highest quality protein supplements in the world, by far the most popular protein on the planet is Gold Standard 100% Whey. Serious Mass is it's bigger brother. With 1250 calories per serve, this mass monster is amazing.

Key Features

• 50 grams of protein per serve
• Ideal for bumping your calories
• Ratio'd to add good muscle mass

Serious Mass Flavours

When it comes to hard gainers or endurance athletes alike it can sometimes seem impossible to eat sufficient calories. Optimum Nutrition makes your calories seem effortless with the following delicious flavours: 

Banana - A more subtle and complex flavour than you would expect. Deliciously creamy start to finish.

Chocolate - A rich dairy chocolate taste, no over-powering artificial aftertaste.

Vanilla - Delicious vanilla cream, no clump at all not too sweet.

Strawberry - Sweet strawberry milkshake, smooth and soft all at the same time.