From the manufacturer:
Oats and whey are fundamental elements of an athlete's diet. Naturally low in sugar, oats supply slow-burning complex carbohydrates and hunger-filling dietary fiber. Whey proteins are readily digested and provide considerable amounts of essential amino acids, especially the three branched chain amino acids (BCAAs). Optimum Nutrition's Natural 100% Oats & Whey combines the benefits of these nutritional powerhouses in a smooth, drinkable shake that's quick to prepare and equally easy to clean up after. Each serving packs in 24 grams of all-whey protein and as much fiber as a big bowl of oatmeal. Better yet, it tastes great, and it goes down easy. As the name suggests, Natural 100% Oats & Whey is free of artificial flavors and sweeteners. So naturally, it's great for breakfast, after workouts, and anytime that you're looking for an on-the-go meal.