dual chamber vape pens

https://wiki-fusion.win/index.php/A_Practical_Guide_to_Cannabis_Vape_Cartridges:_What_to_Look_For

Dual chamber vape pens let you carry two different materials or flavors in one sleek device, great for switching between CBD and THC or mixing strains without carrying extra gear. The separated chambers keep each pure until you decide to use them.