All Burst My Bubble vape juices are supplied in 100ml shortfill bottles with 0mg. There is a capacity for up to 120ml of liquid which leaves room for 2 nic shots so you can simply remove the lid and add the nic shots to your preference and then replace the lid before shaking well to mix the ingredients then leaving to steep for a short while before you fill your tank and enjoy the great flavours of Burst My Bubble. At the time of ordering on the Next Day Vapes website you can select the nic shot you require (up to 18mg)..