The Sci-MX Mass system is a super-high-protein/high-calorie/high-carb mass gain formula designed to accelerate muscle gains when used in conjunction with heavy weight training. This is the ultimate mass builder which contains 46g of cutting edge GRS-5 (gradual release system) protein blend. This pack contains 5kg of strawberry flavour mass builder with 100g slow burning carbohydrates, 12g glutamine, and 8g BCAA's.