Whey Protein Isolates (WPI) are the purest form of whey protein that currently exists. WPIs are costly to use, but rate among the best proteins that money can buy. Flavors available: banana cream, birthday cake, blueberry cheese cake, cake batter, cake donut, chocolate coconut, chocolate dipped banana, chocolate malt, chocolate mint, chocolate peanut butter, coffee, cookies & cream, double rich chocolate, extreme milk chocolate, french vanilla creame, gingerbread, key lime pie, mocha cappuccino, peppermint mocha, rocky road, salted caramel, strawberry, strawberry banana, vanilla ice cream and white chocolate.