Natural Energy Bars from Powerbar have a new texture and are made with ingredients such as fruit, nuts and oats. Natural Energy Bars are ready to use before or during your long duration training sessions. Natural Energy Bars from Powerbar have a new texture and are made with ingredients such as fruit, nuts and oats. Natural Energy Bars are ready to use before or during your long duration training sessions. 40g bar. Provides carbohydrate. Cereal bar based on fruit, nuts and oats Natural Energy Bars from Powerbar have a new texture and are made with ingredients such as fruit, nuts and oats. Natural Energy Bars are ready to use before or during your long duration training sessions. Natural Energy Bars from Powerbar are made with ingredients such as fruit, nuts and oats. A delicious bar that is worth a try!