"Duality“ series The design looks like a double strand of a simple ring and a twisted ring. It is designed to be worn on either side. It expresses the multifaceted nature of human beings that changes depending on the community and the people involved. It is designed to be used by both men and women. Men are recommended to use it with a pinkie, and women can match it with any finger. It is also recommended as a pairing. It is a type that can be adjusted in size, and it is possible to adjust about 1 to 2 sizes before and after.