Here a link to an official information page on using contact lenses in Sauna by the german association of opticians.
https://www.sehen.de/kontaktlinsen/k...-in-der-sauna/
+ good vision
+ better than glasses as not hotter than 40°C (directly on the eye)
- germs
- dry air might make them feel uncomfortable
recommandation:
- never put your fingers into the eye
- close your eyes when taking a shower
Most importantly:
- use dailies and not monthly lenses