A Collins glass is a tall, narrow, cylindrical glass typically used for serving mixed drinks. It generally holds between 10 to 14 ounces and is designed to accommodate a variety of beverages, including the classic Tom Collins cocktail from which it gets its name. Its elongated shape enhances the presentation of layered cocktails and allows for plenty of ice, which keeps the drink well-chilled. The Collins glass typically holds between 10 to 14 ounces, making it perfect for cocktails that require a larger volume of mixers.

The straight sides of the Collins glass not only provide a sleek and elegant appearance but also make it easy to stir the drink. This glass is often used for serving fizzy and refreshing cocktails, as its shape helps maintain the carbonation. Its versatile design and practical functionality make the Collins glass a staple in any barware collection, ideal for both casual and sophisticated settings.