I believe it's a womens sz 9, but a man could wear it too if he has smaller fingers. I wear a sz 7 on my right ring finger & it fit's on my index. However, My husband wears a sz 11 on his right ring finger, & it fits on his pinky.
Sorry, it took me so long to get back to you. I had to watch my granddaughter today, so I had my duaghter try it on. I was wron. She's a size 8. Anyway, it fits a little loose on her, so its either a size 8.5 or 9. I hope that helps!