Tinksky Adjustable Heart Shaped Color Change Emotion Feeling Mood Finger Ring Material: Alloy. Ring inner diameter: Approx. 18mm(unstretched). Size: US size 8. Adjustable size, suitable for both men and women to wear. Delicate and sparkling color changing design to make it more charming. A simple and romantic women's finger ring for your friend or lover. Easy and comfortable to wear.