Exactly one week ago we confirmed that Optimum Nutrition had finally put together a Birthday Cake flavor for its popular protein powder, Gold Standard 100% Whey. The announcement had yet to be made by the brand itself, however we now have something a little more official for you. As you can see in the image above the latest flavor from Optimum has officially been unveiled. The brand has given the cake inspired effort a rainbow stripe by its flavor name, that will no doubt help it stand out a little more than the rest of its other many options on shelves.
