LION DENT.EX Ultra Floss Set of 2 Boxes This is dental floss exclusively sold at dental clinics. It's a high-performance floss using "Tecmilon™", a special fiber that is difficult to break. It's a holder type, easy to use, and recommended for interdental cleaning. Set Contents M size (Regular type) … 3 pieces × 1 box S size (Thin type) … 2 pieces × 1 box (1 piece has been used from this box, so there are 2 pieces remaining.) As a substitute, I will include 2 pieces of Sunstar floss. Total: 7 pieces There may be some damage or dents to the boxes from when they were brought home after purchase. Also, the contents were opened before listing to confirm the number of pieces. It will be shipped in simple packaging.