A highball glass is a tall, slender glass typically holding 8 to 12 ounces of liquid. It is designed for mixed drinks and cocktails, featuring straight sides and a heavy base for stability. The clear glass construction showcases the drink's contents, including any garnishes or layered ingredients. The highball glass is ideal for beverages with a significant mixer component, such as a Gin and Tonic, Whiskey Highball, or Rum and Coke.

This type of glassware is favored for its versatility and elegant presentation. It allows for a balanced ratio of spirit to mixer, enhancing the overall drinking experience. Highball glasses are also used for serving non-alcoholic drinks like iced tea, lemonade, and soda, making them a valuable addition to any bar or kitchen.