C4 Mass packs a 1-2 punch for those who are looking to put on size.* Its formula combines the high-energy profile of the flagship C4 plus an advanced and proprietary Creacarb blend of creatine and carefully selected carbohydrate sources.* C4 Mass has key components for long lasting energy, including the new breakthrough ingredient, TeaCor™, to help you push through your toughest workouts.* If you are serious about putting on size, you need energy to train and carbs to grow.* Whether you’re a hard gainer, or simply trying to add lean muscle to your physique, a diet that supports growth, and supplements that help the body maximize its potential are crucial for success.