BevNET Review:
This flavor of M13 is definitely the best tasting of the bunch, which is the result of a prominent blueberry note to body of the product. The function of the drink isn't overly obvious from the name, but it's energy -- in the form of 88mg of naturally occurring caffeine from the yerba mate. While the caffeine is on par with some of today's energy drinks, it's the attractive and innovative packaging as well as the enjoyable flavor that would keep us coming back for more.
