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스펀지라 부드럽고 저자극이라 좋을듯하네요
This is the Systema sponge dental floss that I like the most and use frequently.
It is softer than regular dental floss, and because it spreads out like a sponge when inserted into the gums and comes into contact with saliva, food particles stuck between the teeth are cleanly removed.
There are many dental flosses with rough surfaces, but I liked this one because it was soft.
If you stock up on several when they are on sale, the price isn't too burdensome.
I can recommend this product because I have been using it myself for several years.