Sturdy is a trait which can only be found on armor. Once you have researched the trait on a given item type, you can craft Sturdy armor by using ON-icon-trait material-Quartz.png Quartz. Items with the Sturdy trait will reduce the Stamina cost of Blocking (or Magicka cost in the case of Frost Staves with Tri Focus) by an amount dependent on the quality of the item.

Reduce Block Cost
Normal Fine Superior Epic Legendary
Per Item 2% 2.5% 3% 3.5% 4%
Max Total 14% 17.5% 21% 24.5% 28%
Max w/ Shield 16% 20% 24% 28% 32%