Hard seltzer and tall boys, too. | All Cans Deserve Cold | Our line of Colster® Can Insulators is like a personal cooler for your can. Insulated like all Rambler® Drinkware, these hefty heat-protectors help preserve that fresh-from-the-cooler (or fridge) temp, while you enjoy at your own pace. | | | Lock In Your Next Adventure | | Rambler 12 oz Colster Can Insulator | Sized for sparkling water, soft drinks, and good old-fashioned beer, all kept straight-from-the-cooler cold while kicking back. | | | | Rambler 12 oz Colster Slim Can Insulator | Ideal for keeping hard seltzers icy cold while hanging out on the hottest days. | | | | Rambler 16 oz Colster Tall Can Insulator | The perfect fit for bigger cans (like craft beers), keeping the last sips as good as the first. | | | | Let's Take a Deeper Dive | LOAD-AND-LOCK® GASKET | A quick quarter-turn is all it takes to secure your can. | DOUBLE-WALL VACUUM INSULATION | Keeps cold drinks cold. | NO SWEAT™ DESIGN | Prevents condensation, keeping hands dry. | | | | | |