Select Protein is a premium blend of whey and casein protein, perfectly flavored to taste true to each flavor name, leaving you craving more every day. Select is third-party tested for quality and purity. This low-carb, gluten free formula uses top-notch milk protein isolate as its #1 ingredient, rarely used in protein powders due to its high cost. Milk protein isolate is very low in lactose giving Select Protein great digestion. Read below to learn something new about protein powders and how Select Protein stands apart.