This short sleeve shirt will come in handy whether you are a field biologist or a just a friend of bats and want to help explain these wonderful elusive creatures to the general public. With 1500 identified species in the world, bat indentification is a complex process. Until now! We've got this. And so will you. Who knew that wildlife identification could be explained is such a direct, understandable and humorous way? Beware the flying squirrel! Not a bat! Not a bat!