Read from the World of Warcraft client build files.
How Obsidian Gladiator's Leather Jerkin Compares
Who It Suits
Leather is the armor type Demon Hunter, Druid, Monk and Rogue wear. With Agility or Intellect, Obsidian Gladiator's Leather Jerkin suits Assassination, Outlaw and Subtlety Rogue; Brewmaster, Mistweaver and Windwalker Monk; Balance, Feral, Guardian and Restoration Druid; Havoc, Vengeance and Devourer Demon Hunter.
Transmog Sets
Obsidian Gladiator's Leather Jerkin is part of the transmog set Obsidian Gladiator's Leather Armor (Demon Hunter only), which the Appearances collection lists in 3 versions. The other 16 pieces:
Built from the World of Warcraft client build files and recorded Auction House snapshots.
Where Obsidian Gladiator's Leather Jerkin Fits
Other Items Named Obsidian Gladiator's Leather Jerkin
3 other items in the current build are also called Obsidian Gladiator's Leather Jerkin. Same-name entries are usually a different rank, faction, quest stage or reward track of the same object.
Items Numbered Next to Obsidian Gladiator's Leather Jerkin
Blizzard numbers items as they are created, so the named items next to ID 205522 (205517 to 205527) were usually added in the same batch as Obsidian Gladiator's Leather Jerkin: the same quest line, zone, vendor or reward set.