ZonePerfect Energy Bars have the perfect energizing blend of nutrients to satisfy those snack cravings. Our bars contain caffeine levels equivalent to 1/2 cup of coffee for a boost of energy. They're packed with 11 grams of high-quality protein, choline to support brain health, and contain no artificial flavors, no artificial colors, no artificial sweeteners, and no high-fructose corn syrup. If you're not 100% satisfied with the taste of our snack bars, we'll give you your money back, guaranteed!