Thank you for viewing! ★ Platypus Orthodontic Flosser This is dental floss for orthodontic treatment. Out of 30 pieces, half have been used. 15 unused pieces are for sale. I am selling them because my orthodontic treatment has ended. Although they are unused, they have been opened and stored for a period of time, so I am selling them at a low price. Please refrain from purchasing if you are concerned about them being opened. Please be sure to read the profile section as well (u_u*)