A highball glass is a tall, straight-sided drinking glass typically used for serving mixed drinks. It usually holds between 8 to 12 ounces of liquid, making it perfect for cocktails that are served with a larger volume of mixer, such as soda or tonic water. The design allows for plenty of ice, which keeps the drink cold and refreshing. Common drinks served in a highball glass include the classic whiskey and soda and gin and tonic. Its simple shape and versatility make it a staple in bars and homes alike, ideal for both casual gatherings and more formal occasions.