The Dschinni Royal Stone Phunnel bowl features a lip exclusively for use with heat management devices. It has a deep trench great for long sessions.
Fireclay is a fireproof material that has special thermal properties and is therefore the ideal material for shisha bowls.
The specific heat capacity of 1.00 kJ/(kg K) is quite high.
High quality fireclay brick (higher application temperature) is characterized by a very high Al2O3 content. The material is used for tiled stoves, fireplaces and e.g. pizza stones.