This is a new set of two. Please refrain from price negotiations. Dental floss exclusively for dental clinics, with 384 fibers that remove debris from between teeth. When it comes into contact with saliva, the 384 ultra-fine floss fibers, bundled like a single thread, expand and gently remove plaque from every corner. This floss is gentle on the gums and won't cause any damage. ■ Recommended by a leading expert in floss research Floor Floss has been tested by a professor at the University of Genoa, Italy. This is a highly reliable product recommended for its contribution to gum health. ■ Made in Milan, Italy Milan, Italy, the city of fibers and fashion. In Italy, the use of dental floss is commonplace, and children use it from a young age. This product uses materials from Italy, where dental floss is as common as breathing, so it is high-quality and very durable. You don't have to worry about the floss breaking during use, so you can use it with peace of mind. ■ Fine fibers & Afro processing The soft fibers are a key feature. It can thoroughly remove debris from between teeth and plaque near the roots (the base where the teeth and gums meet) without damaging the gums. The thread that looks like one is actually an aggregate of 384 fine fibers (expandable type). Each thread is treated with "Afro processing," which curls and undulates, firmly removing bacteria lurking in the gums. ■ Amazing plaque adhesion reduction rate The average plaque adhesion reduction rate for the Floor Floss user group is about 70%. This figure is remarkable compared to other flosses, which are around 44% to 50%. This dental floss provides amazing cleaning effects and satisfies users. ■ Product Specifications Contents: 45m / 250m / 250m (refill) Materials / Ingredients / Contents: (Thread: Polyester), Wax Country of Manufacture: Italy Color: White (thread)