The Skratch Labs Super High-Carb Sport Drink Mix is designed to solve a prevalent problem for endurance athletes: fueling for big days of training or racing when preparing or carrying real food isn’t possible. Super High-Carb is powered by Cluster Dextrin™, a highly-complex carbohydrate that digests easily and steadily, like real food. One serving of Super High-Carb provides 400 calories of energy.