Nature’s Best - Isopure Perfect Zero Carb Unflavored - 3 lbs. (1361 g) Nature’s Best IsopurePerfect Zero CarbUnflavored WPIpowder contains 26 grams per serving of 100% Whey Protein Isolate stripped of fat carbs fillers sugars and lactose. Easy to add to any food and beverage (hot or cold)