Introducing the ON OPTI-BAR – The latest innovation brought to you by ON, the sport nutrition industry leader and maker of the world?s bestselling whey. Only the best quality from Optimum Nutrition, the brand you trust.You work hard in the gym to push your muscles. You know protein is crucial for muscle support. Reach for ON?s new high protein OPTI-BAR anytime you need 20g of protein to fuel muscle recovery. Less than 5 grams of sugar per bar. Now available in 3 tempting flavors.