Now you can leave those polluting petroleum based products behind! Most regular dental floss is made of nylon & packaged in a plastic, non-reusable box. The KMH FLOSSPOT contains 40m of silk dental floss, lightly waxed for strength and ease of use between tight teeth & is lab tested for purity. It is unflavored. The floss comes in a mini glass mason jar which has been designed for endless refills.