The game's collection data lists Passive Resistor Spaulders as sold by 3 vendor NPCs in Orgrimmar, Stormwind City and Dalaran. The first vendor stands at 37.9, 70.8 on the Orgrimmar map.
Vendor NPC, zone and position come from the client's collection source tables (CollectableSourceInfo and CollectableSourceVendorSparse); coordinates are the in-game map readout.
Build history
First seen in build 5.5.4.69585 (Mists of Pandaria).
Read from the World of Warcraft client build files (JournalEncounterItem, JournalEncounterCreature, Achievement) and the Blizzard Game Data quest API.
How Passive Resistor Spaulders Compares
Who It Suits
Leather is the armor type Demon Hunter, Druid, Monk and Rogue wear. With Agility or Intellect, Passive Resistor Spaulders 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
Passive Resistor Spaulders is part of the transmog set Stormrider's Vestments (Druid only). The other 16 pieces:
1 other item in the current build is also called Passive Resistor Spaulders. Same-name entries are usually a different rank, faction, quest stage or reward track of the same object.
Blizzard numbers items as they are created, so the named items next to ID 59218 (59213 to 59223) were usually added in the same batch as Passive Resistor Spaulders: the same quest line, zone, vendor or reward set.