Get the additional energy support you need for those longer endurance races in a convenient, easy to use supply. Energize your system for hours with GU Roctane Ultra Endurance Energy Gel. After years of testing with elite athletes, GU provides the ultimate energy gel that slows down lactic acid build-up and packs in a superior mix of carbs (maltodextrin and fructose), electrolytes and caffeine to help you power through any test of endurance. 24 Pack