Basic Supplements Mass Gainer delivers a comprehensive formula designed to support serious muscle-building goals. This 15-pound container provides a substantial supply of high-quality carbohydrates, proteins, and essential nutrients formulated to fuel intense training sessions and promote lean mass development. Ideal for athletes and fitness enthusiasts seeking reliable nutritional support during progressive resistance training programs. Mix with water or milk for a convenient post-workout or between-meal shake that helps bridge caloric gaps in your daily nutrition plan.