【Adjustable Size】Size 13-19 (Inner diameter approx. 17mm-19mm). The anti-snoring ring allows for some size adjustment to ensure a secure fit on the finger when worn. The anti-snoring ring is made of pure copper, making it resistant to cracking and rust. 19-40-1199 °°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°°° ⚠️Check out other products too ↓ #Kinoko "Deals on my profile♪" ＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊＊ ・Instant purchase OK ('・・＊) ・Additional shipping charges may apply for Hokkaido, Okinawa, and remote islands ◎ ・Standard mail takes time to arrive *