In Wrath of the Lich King it is item level 238 and requires level 80. In MoP Classic it is item level 238, requires level 80 and sells to vendors for 1c.
In the Appearances collection, Furious Gladiator's Felweave Raiment is listed as Vendor. Appearance ID: 10851. No other item uses this appearance, so it is unique to Furious Gladiator's Felweave Raiment.
Read from the World of Warcraft client build files.
How Furious Gladiator's Felweave Raiment Compares
Who It Suits
Cloth is the armor type Mage, Priest and Warlock wear. With Intellect, Furious Gladiator's Felweave Raiment suits Discipline, Holy and Shadow Priest; Arcane, Fire and Frost Mage; Affliction, Demonology and Destruction Warlock.
Similar Items
The 10 items nearest to Furious Gladiator's Felweave Raiment (item level 35) in item level among Armor > Cloth, Chest slot, from item level 32 to 37.
Items Numbered Next to Furious Gladiator's Felweave Raiment
Blizzard numbers items as they are created, so the named items next to ID 41998 (41992 to 42004) were usually added in the same batch as Furious Gladiator's Felweave Raiment: the same quest line, zone, vendor or reward set.