[Cooper2010]

This is what is says in the instructions for "Refilling the Liquid":

In other versions of the Janty eGo, a fine tissue is used to hold the liquid in the cartridge. The Janty eGo tank system uses a different system. Just open the cap, drip the liquid into the cartridge and close the cap.

I wonder why they didn't include that type of cartridge with the system instead of the prefilled that won't open? I don't understand that. With this one there is no tissue, I've seen that on youtube and it makes sense.

This one doesn't open or anything. Just a tiny hole in the top. Dripping liquid into that it leaks out from the bottom.

I got the RY4 and tobacco mint. I don't like the RY4, that's what the prefilled came with.