Clif Bars are made with wholesome ingredients like rolled oats, fruits, and nuts8. They're a convenient source of energy before, during, or after activities like hiking, biking, or a busy day on the go. Select from a variety of flavours to suit your taste. Clif Bars provide sustained energy and can help replenish muscle glycogen. They also contain B6 and B12 vitamins, which contribute to the normal release of energy.