Classic bottle coolers with a twist! The heat sensitive neoprene material of this fun beverage holder changes colors by the heat of your hand. If the cooler changes color, you know it is time for a fresh cold beverage! The branded insulators feature a zippered closure with an O-ring pull to hold your drink better. These improved can coolers are made of durable yet flexible neoprene fold quickly and easily and will keep beverages cooler longer. The koolies are available in a large selection of vibrant colors! Collapsible design folds flat for pocket or purse storage. This classic item is great for tailgating parties, company picnics, or mass company mailings! Customize with an imprint to further tailor to your next event.