Read from the World of Warcraft client build files (JournalEncounterItem, JournalEncounterCreature, Achievement) and the Blizzard Game Data quest API.
How Heroes' Earthshatter Legguards Compares
Who It Suits
Mail is the armor type Evoker, Hunter and Shaman wear. With Agility or Intellect, Heroes' Earthshatter Legguards suits Beast Mastery, Marksmanship and Survival Hunter; Elemental, Enhancement and Restoration Shaman; Devastation, Preservation and Augmentation Evoker.
Transmog Sets
Heroes' Earthshatter Legguards is part of the transmog set Heroes' Earthshatter Regalia (Shaman only). The other 16 pieces:
Built from the World of Warcraft client build files and recorded Auction House snapshots.
Where Heroes' Earthshatter Legguards Fits
Other Items Named Heroes' Earthshatter Legguards
1 other item in the current build is also called Heroes' Earthshatter Legguards. Same-name entries are usually a different rank, faction, quest stage or reward track of the same object.
Items Numbered Next to Heroes' Earthshatter Legguards
Blizzard numbers items as they are created, so the named items next to ID 39589 (39581 to 39594) were usually added in the same batch as Heroes' Earthshatter Legguards: the same quest line, zone, vendor or reward set.