It's just a ring. The size is about 8.5. My colleagues wanted me to make a ring for them, and I don't know why. I don't care. I just did it. I'll share it with everyone. Feel free to do whatever you want with it. The top is flat because it was originally intended to be paired with different shapes for each ring. I'm providing a flat version so you can add anything you want to the top. Have fun with it. They had a great time playing with it.