Pack size 200 liners: The Bambino Mio one-way liners allow moisture to pass through into the nappy, but prevent it seeping back. The liners retain solids to help prevent soiling of the nappy and because they are biodegradable they are safe to flush away without harming the environment.Personal Care Product No refunds or exchanges once this product has been washed or used. Packs will only be accepted back if they are complete. This does not affect you statuary rights.