These aren't your ordinary cheap, foam junkers your friends give away at their weddings. These are the real deal. High quality neoprene keeps your drink cold and your hands dry, while the collapsible design fits easily in your back pocket. What more could you ask for (other than another beer?)
Wikipedia identifies some of the many names for this single item in its article, stating: "The beer koozie, "beer hugger", or "beer huggie", is a misnomer as it is not always used for an alcoholic beverage. Other names are "coastie", "cozy", "coosie", "coolie", "coldy-holdy", "can cooler", "beer sleeve"and "bottle jacket".