I purchased this at the dentist. I used about 30cm, but it was a bit too thick for me, so I'm selling it. There's at least 29m remaining. You can still use a lot of it. I will take waterproof measures with a plastic bag. I will ship via Yu-Yu Mercari, an anonymous delivery service. High plaque removal ability realized by the application of microfiber (ultra-fine fibers). Gentle on the gums and comfortable to use. [Product] Ruscello GC Dental Floss 30m (Remaining 29m or more) [Product Features] Dental floss that expands to firmly remove plaque. ● Waxed type for easy insertion between teeth. ● Stylish and portable case. [Precautions for Use] ● Store in a place away from direct sunlight, high temperatures, and humidity. ● Do not force the floss in. It may damage your teeth or gums. ● If the floss gets caught between your teeth or breaks easily, it may be due to a problem with your fillings or a cavity. Consult your dentist. ● Be careful not to cut your fingers with the cutter.