- Blacksmiths and general goods merchants.
- Found as random loot in chests.
- Killing Fultheim the Fearless during the Dark Brotherhood quest "With Friends Like These...."
- One can be found if the Dragonborn kills Karita on the way to High Hrothgar.
- Found on bandits.
It can be upgraded with a Corundum Ingot at a workbench and also benefits from the Advanced Armors perk, which doubles the improvement.