Marvelous Nutrition BIG Extreme Weight Gainer – 3KG – High-Calorie Mass Formula – 30 Servings. Achieve your size and strength goals with Marvelous Nutrition’s BIG Gainer. Designed for hard gainers and high-performance athletes, each 300g serving delivers 1122.6 kcal, 51g of protein, and 215g of carbohydrates to maximize mass gain. This fast-digesting formula includes whey protein concentrate, clean carbs from maltodextrin, and an essential amino acid profile to support rapid muscle recovery and growth. Zero trans fats, low sugar, and no aspartame – just pure bulking power in every scoop.