Gladiator's Leather Helm is one of 5 pieces of Gladiator's Vestments, alongside Gladiator's Leather Gloves, Gladiator's Leather Legguards and Gladiator's Leather Spaulders and others. Bonuses activate at 4 pieces equipped.
In The Burning Crusade it is item level 123 and requires level 70. In Wrath of the Lich King it is item level 123, requires level 70 and sells to vendors for 1c. In MoP Classic it is item level 123, requires level 70 and sells to vendors for 1c.
Read from the World of Warcraft client build files.
How Gladiator's Leather Helm Compares
Who It Suits
Leather is the armor type Demon Hunter, Druid, Monk and Rogue wear. With Agility or Intellect, Gladiator's Leather Helm 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
Gladiator's Leather Helm is part of the transmog set Gladiator's Leather Armor (Rogue only). The other 8 pieces:
Built from the World of Warcraft client build files and recorded Auction House snapshots.
Where Gladiator's Leather Helm Fits
Other Items Named Gladiator's Leather Helm
4 other items in the current build are also called Gladiator's Leather Helm. 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 25830 (25825 to 25835) were usually added in the same batch as Gladiator's Leather Helm: the same quest line, zone, vendor or reward set.