The Square Phunnel hookah bowls pair well with moist shisha since it keeps the juice in the bowl instead of dripping down. The ceramic bowl is constructed with the top of the phunnel shorter than the outer edges. You won't lose any airflow when you put foil on top. All the phunnel features allow for longer smoke sessions and maximum flavor retention from start to finish. The square shape is very unique and works well with hookah squeeze paste as well.