The bowl is tapered and usually flares at the rim. The top of the bowl is often dome-shaped. The tobacco chamber is usually tapered. The majority of Calabash pipes are 3/4 bent, but there are variations among pipe makers and a straight Calabash is not out of the question.
One last Bent that is a shape on its own is the Calabash, directly copied from the Calabash pipe, which is made from the hard shell of an African gourd and fitted with a meerschaum bowl or lining.