This interesting design from Agung has a liquid filled chamber in the neck. The piece can be placed in the fridge (not the freezer) to cool the liquid inside the neck, this will help to cool smoke as it passes through that section of the glass.
Height: 25cm
Stem: 10cm, Bonza
Shot hole
Blue liquid filled chamber
Stem and cone included
Made from Pyrex glass
*Stem colour is selected at random and may not match the liquid colour