Price will increase from October. Please consider purchasing soon. We will send you the new package. Dental exclusive floss Mint Black 50m The floss is black, so you can easily see how much is stuck between your teeth. It's very popular! The floss is also long, at 50m. Can be combined with whitening floss. The spaces between teeth are prone to cavities due to missed brushing, and can also cause bad breath. How about using this for your daily care? This item will be shipped via Nekopos with waterproof packaging.