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The stretchy fabric provides optimal compression
Sourced from GMO-free
Enhances muscle cell volume for that pumped look
mega-dosed
Reduces acidity in the muscle during extreme endurance activities
Optimum Nutrition | Serious Mass Gainer 2.72kg Casual Workouts The stretchy fabric provides optimalSerious Mass is the ultimate in weight gain formulas providing you with the tools you need to pack on the pounds and develop the physique you've always wanted. Each serving of Serious Mass contains 1250 calories derived primarily from protein sparing complex carbohydrates and a high quality protein blend consisting of Whey Protein Concentrate, Calcium Caseinate, and Egg albumen. Creatine Monohydrate, Glutamine, Choline, and Inositol have been added to
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