Serious Mass Protein Powder Weight Gainer Optimum Nutrition – Chocolate – 5.5KG
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- Serious Mass helps you to develop your fitness you’ve always wanted.
- Each serving of Serious Mass contains 1,250 calories primarily derived from complex carbohydrates.
- 50g of Blended Protein
- Optimum nutrition’s serious mass include over 1250 calories per serving
- Serious mass is available in a range of great tasting flavor