Optimum Nutrition Serious Mass Weight Gainer, 6.6Lb/3Kg

Serious Mass is the ultimate weight gain formulas. With approx1251 calories* per serving (Varies flavourwise) and 50 grams of protein for muscle recovery support, this instantized powder makes the ideal post-workout and between meals shake for sizing up your goals. Now ALL Vegetarian, Serious Mass provides you with the tools you need to pack on the pounds and help you develop the physique you’ve always wanted. ContainsCreatine Monohydrate.

Packing a very substantial 1251 calories* (varies flavour to flavour) into every serving – even more when mixed with cold milk – Serious Mass is the ultimate weight gain formula. With 50 grams of muscle building protein, when used in conjunction with a healthy, balanced diet and regular weight training, this powdered mix provides you with serious weight gaining support for developing your physique to the fullest