GraviToke

It is the gravity device by DynaVap: a sinking water column creates the vacuum that pulls vapor or smoke into the chamber — lifting it back up pushes the cloud out in a controlled way.

Two standard bottles or shot glasses screw onto the valve module (not included); extension tubes for larger bottles are included, as are a burn chamber, silicone tube and travel case.

Of stainless steel tubing with a silicone body — all components are dishwasher safe and disassemble without tools.

With a VapCap as the source it delivers an especially dense, cooled session without heavy lung work — it also doubles as a cocktail smoke infuser.

Disassemble it tool-free and put it in the dishwasher, or rinse it through with isopropyl alcohol.