A parking disk for people who go swimming in winter, e.g. in the lake, i.e. a "swimmer disk".

If you go swimming in winter and are no longer visible to people walking by, they may well get worried or even call the police. (this has all happened before). It's nice that people care about you.

The swimming disk is intended for them, where you can set the time you return from swimming so that they don't have to worry.

The inscription on the disk is in German and English, as tourists also like to come here.

Improvements are already planned for the next version of the disk, such as a repositioning of the rotating wheel for pranksters or children and a snap-in mechanism for the position of the disk. Further suggestions are welcome as comments.

Color change:

Top: 0 - 0.9mm red, from 1mm white
Disc: 0 - 0.6mm black, from 0.7mm white