Airpots come in two main varieties: lever action and push button. Lever-action models tend to be easier to operate, but they can wear out faster, especially if their levers are used as handles to carry them. Push-button models are long-lasting, but some people find them difficult to use. These dispensers also come with two types of insulation. Those with a glass lining can hold heat longer, but they can break if they are dropped or mishandled. Those insulated with air are economical, but can't hold coffee hot for as long.