Basic Supplements Basic Mass Gainer Highlights: Basic Mass is our straightforward, high-calorie mass gainer designed to help you increase size and strength while maintaining a balanced nutritional profile. Formulated with a quality carb complex, it provides the essential nutrients you need to fuel your workouts and support muscle growth. Bulk up effectively with Basic Mass, your essential mass gainer that gets back to the basics of effective muscle building without the B.S. Nutrition Facts: