Size: 39 (24.0-24.5cm) Heel: 6cm The opening has a hook, and the size can be adjusted depending on the position of the hole. I purchased these online, but they didn't fit, so I'm selling them. I tried them on once indoors. They have not been used outdoors. There is a small chip in the circled area in the fifth image, which is an initial scratch. Please purchase only if you understand that these items have been in someone's possession. I will ship them after taking measures to prevent water damage. I also have other goods for sale, so please take a look at my profile. I also offer combined shipping. If you have any questions, please feel free to comment.