In Wrath of the Lich King it is item level 213 and requires level 80. In MoP Classic it is item level 213, requires level 80 and sells to vendors for 1c.
In the Appearances collection, Deadly Gladiator's Felweave Raiment is listed as Vendor. Appearance ID: 10850. No other item uses this appearance, so it is unique to Deadly Gladiator's Felweave Raiment.
Read from the World of Warcraft client build files.
Where Deadly Gladiator's Felweave Raiment Comes From
Deadly Gladiator's Felweave Raiment Drops From
The in-game Adventure Guide lists Deadly Gladiator's Felweave Raiment in the loot of 1 encounter.
Read from the World of Warcraft client build files (JournalEncounterItem, JournalEncounterCreature, Achievement) and the Blizzard Game Data quest API.
How Deadly Gladiator's Felweave Raiment Compares
Who It Suits
Cloth is the armor type Mage, Priest and Warlock wear. With Intellect, Deadly 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 Deadly 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 Deadly Gladiator's Felweave Raiment
Blizzard numbers items as they are created, so the named items next to ID 41997 (41991 to 42003) were usually added in the same batch as Deadly Gladiator's Felweave Raiment: the same quest line, zone, vendor or reward set.