The Hario V60 filter papers have been designed to remove unnecessary oils from your brew. Hario Filter papers: 02 filters to suit 02 drippers - available in pack of 40 or 100. The filters have been oxygen bleached, so it is always recommended to pre-wet/ rinse the papers prior to use to ensure that no paper taste is transferred during the brewing process. The Hario V60 filter papers are biodegradable and will consistently deliver a perfectly clean, sediment free brew.