• Relentless Gladiator's Leather Tunic
• Item Level 251Disenchants into:
  [Abyss Crystal]: 1-2
• Binds when picked up
  
• Leather
• Chest
• 636 Armor
• +128 Agility
  +164 Stamina
• Red Socket
  Yellow Socket
• Socket Bonus: +6 Resilience Rating
• Durability 120 / 120
• Classes: Rogue
• Requires Level 80
• Requires personal and team arena rating of 1600
• Equip: Improves critical strike rating by 80.
  Equip: Improves your resilience rating by 96.
  Equip: Increases attack power by 145.
• 
• Relentless Gladiator's Vestments (5 pieces)
• [Relentless Gladiator's Leather Helm]
  [Relentless Gladiator's Leather Tunic]
  [Relentless Gladiator's Leather Legguards]
  [Relentless Gladiator's Leather Spaulders]
  [Relentless Gladiator's Leather Gloves]
• (2) Set: +50 Resilience Rating.
  (4) Set: Increases your maximum Energy by 10.

Source

This item is sold by the following vendors for 13,200 770 :

•  Big Zokk Torquewrench <Arena Vendor> in Netherstorm
•  Evee Copperspring <Arena Vendor> in Gadgetzan
•  Nargle Lashcord <Arena Vendor> in Dalaran

This item is also sold by the following vendors for 95 :

•  Arcanist Uovril <Emblem of Frost Quartermaster> in Alliance
•  Magister Arlan <Emblem of Frost Quartermaster> in Dalaran
•  Goodman the "Closer" <Emblem of Frost Quartermaster> in Icecrown Citadel

Patch changes

• Patch 3.2.0 (04-Aug-2009): Added. 
  

External links

• Battle.net (EU)
• Wowhead
• Thottbot
• WoWDB