The Quaffer double bubble layered bar shot glasses are a patented design that allows you to enjoy both your shot and chaser in one glass. The barware hourglass shape and correct pour technique allow the liquids to naturally separate, providing you with a delicious shot experience where you immediately taste the chaser following the alcohol. Constructed with thick weighted glass, this set of 2 glasses comes with a recipe card containing recipes for whiskey, rum, Jagermeister, tequila, and vodka, making them the perfect addition to any fun party or celebration. With a total capacity of 3.5 ounces, the top chamber can hold 2.25 ounces, while the bottom chamber can hold 1.25 ounces. The Quaffer cocktail glasses are dishwasher-safe for easy cleanup. Whether you call it a double bubble shot glassess, a snorkel shot glass, or a jigger chaser shot glass, this barware glass design is by far the most user-friendly around, providing you with a shot experience like no other.