Certified gluten-free. 13 g protein. 5 g fiber. Created, owned and operated by registered dietitian nutritionists. Why is Zing? Vigor. Vitality. Zest. As nutrition counselors, we wanted a better on-the-go choice for our patients and our own kids. So we created Zing Bars to provide a smart balance of high quality protein, slow-burn carbs, good fats and dietary fiber. Free of gluten and soy protein. All this, plus an amazing taste we know you'll love. Real nutrition. Real energy. Real Zing!