Optimum Nutrition Serious Mass
Serious Mass is a high calorie weight gainer which should be used only by someone seeking rapid weight gains. The high ratio of carbohydrates means that it supplies a lot of energy but that comes with the caveat that if you do not train frequently it will not be a good choice for you. On the other hand for people performing a lot of cardio or with superfast metabolisms, Serious Mass supplies calories in an easily digestible form to make weight gain easy.
Free UK Delivery With Orders Over £40
Items Under 2kg - £2.99
Items Over 2kg - £3.99
Rest Of The World - £9.99