The athletes and foodies in the Clif kitchen have crafted a different kind of energy bar. CLIF Nut Butter Filled Bars bring together two great energy foods - a delicious, creamy nut butter inside an organic energy bar - to deliver sustained energy. - Certified USDA organic, non GMO - Low glycemic (low glycemic-index foods digest slowly for prolonged levels of energy) - Does not contain partially hydrogenated oils, high fructose corn syrup, or artificial flavors