Provides fast and slowly digesting proteinsFrom 7.3 grams of fibreHigh quality carbs sources from oats, flaxseed & chickpeas You work hard at looking good because it makes you feel good. Watching what you eat and exercising can be a lifestyle balancing act, and ON's new lean range is here to help. Opti-Lean Meal Replacement Shake provide fast and slowly digesting proteins in a powdered meal replacement product that mixes easily, tastes great and contains 7.3* grams of fibre and with high quality carbs sources from oats, flaxseed & chickpeas.