Wondrous Item, uncommon
A simple, brown, soft cloak. It's incredibly comfortable.
No matter what destructive spell/substance lands upon the cloak, it will never tarnish. The player will still feel the effects of whatever strikes the cloak, the cloak will, simply, never be destroyed from it. Additionally, there's a certain...charm to the cloak, which transfers over to its wearer.
+1 to charisma while wearing the cloak!
Notes: Bonus: Charisma Score