Liners are a great optional accessory. Placed on top of the nappy/ booster next to your babies skin, liners help with the clean up process in the event of a soiled nappy. There are two kinds of liners disposbale or reusable. Flushable liners are often bio-degradable and can be composted or flushed down the toilet.
We recommend you check it is okay to flush liners into your toilet system first.