The game's collection data lists Jinyu-Polished Britches as sold by 2 vendor NPCs in Warspear and Stormshield.
Vendor
Zone
Map
Waypoint
Other items it sells
NPC #86376
Warspear
-
-
15
NPC #86387
Stormshield
-
-
15
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.
How Jinyu-Polished Britches Compares
Who It Suits
Leather is the armor type Demon Hunter, Druid, Monk and Rogue wear. With Agility or Intellect, Jinyu-Polished Britches suits Assassination, Outlaw and Subtlety Rogue; Brewmaster, Mistweaver and Windwalker Monk; Balance, Feral, Guardian and Restoration Druid; Havoc, Vengeance and Devourer Demon Hunter.
Similar Items
The 10 items nearest to Jinyu-Polished Britches (item level 39) in item level among Armor > Leather, Legs slot, from item level 31 to 47.
Blizzard numbers items as they are created, so the named items next to ID 92856 (92851 to 92861) were usually added in the same batch as Jinyu-Polished Britches: the same quest line, zone, vendor or reward set.