Reflex Nutrition Instant Mass is a special weight gaining formula specifically designed to maximise muscular weight gain and minimize body fat storage whilst gaining weight. Instant Mass offers maximum muscle gain with minimum fat gain. Ideal for 'hardgainers' - those who struggle to put on muscle - Instant Mass supplies adequate calories and protein to put the body in a truly anabolic, muscle building state. Each serving of Instant Mass contains a special blend containing 50 grams of complex carbohydrates from Activated Barley and Organic Oats, 52 Grams of Whey Protein and Micellar Casein.