OPTIMUM NUTRITION GOLD STANDARD 100% WHEY 2.27KGWhey Protein Isolates are 90% pure protein by weight. They are the purest and most expensive form of whey protein that exists. That's why they are the first ingredients you read on the 100% Whey Gold Standard label. By using Whey Protein Isolates as the primary protein source, Optimum Nutrition have been able to pack 24 grams of the purest, muscle building protein per serving, with a lot less of the fat, cholesterol, lactose, and other stuff that you