The Balloon Kit with Mouthpieces for the Arizer Extreme-Q and V-Tower vaporizers contains:
4 Balloons (food-safe)
The attachment of the ballon is very easy:
At first you have to pull one of the black O-rings over the mouthpiece and place it between the two glass rings. Now pull the other O-ring over the balloons snatched up orifice, 3cm towards the center of the ballon. Finally you have to fold back the brim of the balloon and pull the O-ring from the mouthpiece over it. Now mouthpiece and balloon are connected safe and tight.