This is a protective film to be applied to the glass part of a watch. It comes in a set of 5. It's an adhesive type, so anyone can easily apply it. Also, you can remove it and reapply it many times. The size is 28mm in diameter. The second picture is a sample of the 28mm protective film applied. As you can see in the photo, it doesn't feel like it's applied, but due to manufacturing reasons, there is a hole of about 1mm in the center, so please be aware of this. For those who don't want to scratch their favorite watch, etc. In addition, we will respond flexibly to requests such as the number of films and the size of the film, so please feel free to contact us. We can change to anonymous shipping via Yuu Yuu Mercari. In that case, the price will increase, so please understand. If you wish, please comment.