Mutant Mass Extreme 2500 - 5450 gramsMutant Mass EXTREME 2500 Ultimate Mass Gainer for Hard Gainers Build Muscle & Gain Size Faster Mutant Mass EXTREME 2500 is engineered for extreme hard gainers who struggle to gain mass, no matter how much they eat or train. If you have a fast metabolism or a busy lifestyle, this high calorie mass gainer provides the extra fuel your body needs to grow. Key Benefits: Supports rapid muscle growth Enhances muscle recovery & repair Provides high calorie,