The premise for R1 MASS GAINER™ is simple: to be MASSIVE, you need to go MASSIVE. With more than 1,220 calories, a 250g+ complex carb blend, and 40 grams of protein from three types of whey, this calorie-packed formula provides a 6:1 carb to protein ratio plus over 9 grams of naturally occurring BCAAs & added creatine monohydrate to help fuel your workouts & add size quickly.