We have two types of liners available - reusable and flushable.
The use of a liner is mostly optional except for the pocket nappies because it is already attached. The main reasons for using a liner, is to catch the poo. This makes cleaning the nappy and disposing of solids easier and can also aid in protecting nappies from creams or ointments.
Whichever type is used, please note that you must ALWAYS use a fresh liner at every nappy change.