A Tom Collins is served in a Collins glass. The Collins glass is similar to a highball glass, and it can be used to serve up mixed drinks and mojitos. It is a tumbler with a heavy base and room for lots of ice, according to the WebstaurantStore.com.
The Collins glass holds anywhere from 10 to 14 ounces. It is slightly narrower than traditional highball glasses and has a cylindrical shape. A Tom Collins cocktail is made using gin sour mix and gin or by mixing lemon juice, syrup and club soda with gin. It is often garnished with a Maraschino cherry.