MET-Rx® Big 100 Colossal is a meal replacement bar that provides the on-the-go nutrition you need to help fuel your active lifestyle.* This nutritious bar has 30 grams of protein and features METAMYOSYN® to give you the nutrition you require both in and out of the gym.* In addition each bar has vitamins for energy metabolism and antioxidant support. MET-Rx® Big 100 Colossal is a delicious naturally flavored meal replacement bar that aids you in your journey to achieve your fitness goals.*