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Additionally, consider the type of device youre using

Also available as a Ash and Trash Combo Unit

The electronic devices, which contain liquid nicotine that is heated into a vapour and inhaled, are said to avoid the harm caused by tobacco smoke.But the British Heart Foundation says the devices could not be assumed to be risk-free. The charity also wants more research into the safety of long-term use.Public Health England nevertheless encouraged smokers to switch to e-cigarettes last year, saying they were 95 percent safe.The claim drew fire when it emerged that it came from scientists funded by the e-cigarette industry

So, the size of the receiving pack depends on branded decisions and decisions of buying and government rules