Floss with three functions: dental floss, interdental brush, and interproximal brush. For those undergoing orthodontic treatment and using wires, those with bridges, those with wide gaps, etc. - Brand: ProxySoft - Product Name: 3in1 Floss - Features: Three functions: dental floss, interdental brush, and interproximal brush. I bought this after it was recommended by my dentist. I've used 3-4 pieces, but I'm selling it because I don't use it much. The dentist told me to transfer it to a Ziploc bag because it's difficult to take out, and it really is difficult to take out. I will ship it via non-standard mail. Since it's from Okinawa Prefecture, it will take about a week to arrive.