Rule One Mass Gainer is expertly crafted to support your performance and recovery with high-quality ingredients.
Key Benefits
Rule One Mass Gainer
With over 1,220 calories, more than 250g carbohydrates, and 40g protein from three types of whey, R1 Mass Gainer puts you in charge of transforming to XXL. The 6:1 carb-to-protein ratio in this calorie-packed formula can help you pack on desired pounds.
Experience the SuppPrep difference in every scoop.
