Mass gainer protein powders, also called weight gain protein powders, are specifically formulated for athletes and weightlifters looking to pack on pounds — particularly lean muscle mass.

Best Mass Gainer Crazy Nutrition’s MASS GAINER delivers 488 calories, 40 grams of high-quality protein, and 56 grams of clean carbohydrates, making it an ideal choice for fast, effective muscle ...

If so, mass gainers are an easy way to pack on the calories ... which makes them great for gaining weight. This one from ...