Most armor within The Legend of Zelda: Tears of the Kingdom can be upgraded. In order to upgrade a specific piece of armor, your must have unlocked one of the four Great Fairy locations within Hyrule.

In case you didn't know already, amiibo are NFC-ready toys which offer connectivity features with games on the Wii U, 3DS, and Switch, but also serve as highly-detailed and very desirable trinkets ...