Serious Mass (12 lb)
Serious Mass (12 lb)


Optimum Nutrition

Price: $45.95

Rating: 5 out of 5 stars, based on 2 total reviews.
Rated: 5 out of 5 Read all 2 reviews

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Serious Mass (12 lb)

  1. 5/5

    You can't beat the value of Optimum Nutrition products. They are good quality and reasonably priced. I use this product almost every bulk. I always put on 5 or so pounds a month while on it.
  2. 5/5

    I've used ON's Serious Mass for two bulking cycles and was pleased both times. I packed on 6lbs through the first bulk and 8 on the second. The chocolate flavor tastes great, I bought the same flavor for both rounds in the 12lb bag they have.
    Looking forward to the next bulking phase and ordering this product again!

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