The Karvol Vaporiser promotes clear, easy breathing in a plug-in format that is clean and simple to use.

Each vaporiser pack comes with three refills which contain a unique combination of aromatic oils - pine, cinnamon and menthol to help you or your child to breathe more easily.

Each user-friendly refill lasts up to three nights.

The Karvol Vaporiser unit locks when it is closed, and can only be opened by the refill, which also acts as a key.

Refill packs are also available - containing three refills.
http://www.mrspharmacy.com/karvol-vapouriser-refill-pack-p-2309.html

Plugs into household sockets, so the Karvol Vaporiser can be used in any room in the home.