A team at the University of Washington performed a scientific study with grant funding from the National Center for Atmospheric Research and the National Science Foundation publishing their study findings in Physics Today, where the concluded that koozies help to prevent canned drinks from warming up by preventing condensation from forming on the can. The study was unable (or unwilling) to test the theory that the Marlin Club logo screen printed in white made the beverage in the Koozie taste better, but we recommend you conduct that experiment yourself.