Lean people often find it difficult to gain weight through diet. They then turn to very effective supplement called mass gainer. Providing 658 calories, 4.5G fibre, 84G carbs, 46G protein and 5G BCAA in every serving, Sumu X Mass Gainer 2kg is a perfect jar to buy if you are thinking to gain muscle or increase weight. This high calorie and high carbs drink helps you gain weight quickly. It is often taken by people who want to build lean muscle mass. The fibre content in the mass gainer improves digestion and prevents bloating. It can be taken before breakfast, after workout or before going to bed.