if you walk in the marsh or water with shoes on, they will become wet.
You can either keep walking around them or hang them up to dry on a drying rack or not wear them.
if you dry them on a rack they dry after 4 hours, in an inventory or cupboard 24 hours.
If you keep wearing wet shoes you can get athlete's foot what reduces your Psy, Charsima and Agility.
It causes no damage, be can double to a maximum of 10 times.