Gossamer

Gossamer may look like mere fabric, albeit of extraordinary quality, but this material is crafted of pure magic, and capable of amazing things.   

Gossamer comes in three qualities, the simplest grants the wearer a +1 bonus to armor, the finer quality grants the wearer a +2 bonus to armor, can be given minor enchantments, and self-cleans and mends itself, as if the Prestidigitation or Mending cantrips was cast upon it. The finest quality of Gossamer that can be produced grants the wear a +3 bonus to armor, has the same mending and self-cleaning properties of lesser quality, and can be given major enchantments.