Talk:Erosian War guide/@comment-2601:586:4B01:CF0D:2B:745F:7D5F:31AC-20190731153859/@comment-3180631-20190731155318

It's custom equipment for Balia. You have to talk to her in Premium Steel after you find Stability Crystal (found in the multi-layered Tower trip with Sarai), and it's listed in key items section.