the Davids floss refill system is designed to reduce waste & save energy by eliminating single use disposable dispensers. The reusable plastic dispenser opens easily for installing floss refills (sold separately). expanding floss design, creates increased surface area to more effectively grab plaque and debris for a deeper clean infused with vegan wax & cocoa butter to gently and smoothly clean between teeth and gums premium natural mint essential oils for clean fresh flavor nano-Hydroxyapatite added for aiding remineralization in hard to reach areas multifilament polyester strand (250+individual woven strands) designed for max strength polyester source material made from recycled water bottles. Non-plastic alternatives simply do not function as well as the application demands using daily helps to: improve oral hygiene, prevent bad breath, strengthen enamel, lower risk of tooth decay, lower risk of gum disease, freshen breath mint | 32.8yd / 30m