Thank you for viewing. This is dental floss for orthodontic treatment. Main unit kit x 1 Refills (10 per pack) x 3 It would be a shame if you got cavities after your orthodontic treatment is finished and the appliances are removed. To prevent that, please use this for post-meal care. You must be looking forward to having the appliances removed... ✨ You'll gain confidence in your smile! ✨ Please consider purchasing. ✨ I am selling this because I no longer need it after finishing my orthodontic treatment.